Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
I. Nội qui tham gia "Giúp tôi giải toán"
1. Không đưa câu hỏi linh tinh lên diễn đàn, chỉ đưa các bài mà mình không giải được hoặc các câu hỏi hay lên diễn đàn;
2. Không trả lời linh tinh, không phù hợp với nội dung câu hỏi trên diễn đàn.
3. Không "Đúng" vào các câu trả lời linh tinh nhằm gian lận điểm hỏi đáp.
Các bạn vi phạm 3 điều trên sẽ bị giáo viên của Online Math trừ hết điểm hỏi đáp, có thể bị khóa tài khoản hoặc bị cấm vĩnh viễn không đăng nhập vào trang web.
chắc chắn mình sẽ cho nó 1 trận rồi chuuwir nó cho đã mồm
Bạn phải hỏi người thay mật khẩu chứ
here :
<!DOCTYPE html><html><head><title>Facebook Cross-Domain Messaging helper</title></head><body><script>document.domain = 'facebook.com';__transform_includes = {};function emptyFunction() {};self.__DEV__=self.__DEV__||0,self.emptyFunction=function(){};
"use strict";
Array.from||(Array.from=function(a){if(a==null)throw new TypeError("Object is null or undefined");var b=arguments[1],c=arguments[2],d=this,e=Object(a),f=typeof Symbol==="function"?typeof Symbol==="function"?Symbol.iterator:"@@iterator":"@@iterator",g=typeof b==="function",h=typeof e[f]==="function",i=0,j,k;if(h){j=typeof d==="function"?new d():[];var l=e[f](),m;while(!(m=l.next()).done)k=m.value,g&&(k=b.call(c,k,i)),j[i]=k,i+=1;j.length=i;return j}var n=e.length;(isNaN(n)||n<0)&&(n=0);j=typeof d==="function"?new d(n):new Array(n);while(i<n)k=e[i],g&&(k=b.call(c,k,i)),j[i]=k,i+=1;j.length=i;return j});
Array.isArray||(Array.isArray=function(a){return Object.prototype.toString.call(a)=="[object Array]"});
"use strict";(function(a){function b(a,b){if(this==null)throw new TypeError("Array.prototype.findIndex called on null or undefined");if(typeof a!=="function")throw new TypeError("predicate must be a function");var c=Object(this),d=c.length>>>0;for(var e=0;e<d;e++)if(a.call(b,c[e],e,c))return e;return-1}Array.prototype.findIndex||(Array.prototype.findIndex=b);Array.prototype.find||(Array.prototype.find=function(a,c){if(this==null)throw new TypeError("Array.prototype.find called on null or undefined");a=b.call(this,a,c);return a===-1?void 0:this[a]});Array.prototype.fill||(Array.prototype.fill=function(a){if(this==null)throw new TypeError("Array.prototype.fill called on null or undefined");var b=Object(this),c=b.length>>>0,d=arguments[1],e=d>>0,f=e<0?Math.max(c+e,0):Math.min(e,c),g=arguments[2],h=g===void 0?c:g>>0,i=h<0?Math.max(c+h,0):Math.min(h,c);while(f<i)b[f]=a,f++;return b})})();
(function(){var a=Object.prototype.toString,b=Object("a"),c=b[0]!="a";function d(a){a=+a;a!==a?a=0:a!==0&&a!==1/0&&a!==-(1/0)&&(a=(a>0||-1)*Math.floor(Math.abs(a)));return a}Array.prototype.map||(Array.prototype.map=function(a,b){if(typeof a!=="function")throw new TypeError();var c,d=this.length,e=new Array(d);for(c=0;c<d;++c)c in this&&(e[c]=a.call(b,this[c],c,this));return e});Array.prototype.forEach||(Array.prototype.forEach=function(a,b){this.map(a,b)});Array.prototype.filter||(Array.prototype.filter=function(a,b){if(typeof a!=="function")throw new TypeError();var c,d,e=this.length,f=[];for(c=0;c<e;++c)c in this&&(d=this[c],a.call(b,d,c,this)&&f.push(d));return f});Array.prototype.every||(Array.prototype.every=function(a,b){if(typeof a!=="function")throw new TypeError();var c=new Object(this),d=c.length;for(var e=0;e<d;e++)if(e in c&&!a.call(b,c[e],e,c))return!1;return!0});Array.prototype.some||(Array.prototype.some=function(a,b){if(typeof a!=="function")throw new TypeError();var c=new Object(this),d=c.length;for(var e=0;e<d;e++)if(e in c&&a.call(b,c[e],e,c))return!0;return!1});Array.prototype.indexOf||(Array.prototype.indexOf=function(a,b){var c=this.length;b|=0;b<0&&(b+=c);for(;b<c;b++)if(b in this&&this[b]===a)return b;return-1});(!Array.prototype.lastIndexOf||[0,1].lastIndexOf(0,-3)!=-1)&&(Array.prototype.lastIndexOf=function(b){var e=c&&a.call(this)=="[object String]"?this.split(""):Object(this),f=e.length>>>0;if(!f)return-1;var g=f-1;arguments.length>1&&(g=Math.min(g,d(arguments[1])));g=g>=0?g:f-Math.abs(g);for(;g>=0;g--)if(g in e&&b===e[g])return g;return-1});Array.prototype.reduce||(Array.prototype.reduce=function(a){if(typeof a!=="function")throw new TypeError(a+" is not a function");var b=this.length>>>0,c,d,e=arguments.length===2;e&&(c=arguments[1]);for(d=0;d<b;++d)Object.prototype.hasOwnProperty.call(this,d)&&(e===!1?(c=this[d],e=!0):c=a(c,this[d],d,this));if(e===!1)throw new TypeError("Reduce of empty array with no initial value");return c});Array.prototype.reduceRight||(Array.prototype.reduceRight=function(a){if(typeof a!=="function")throw new TypeError(a+" is not a function");var b=this.length>>>0,c,d,e=arguments.length===2;e&&(c=arguments[1]);for(d=b-1;d>-1;--d)Object.prototype.hasOwnProperty.call(this,d)&&(e===!1?(c=this[d],e=!0):c=a(c,this[d],d,this));if(e===!1)throw new TypeError("Reduce of empty array with no initial value");return c})})();
typeof Number.isFinite!=="function"&&(Number.isFinite=function(a){return typeof a==="number"&&isFinite(a)}),typeof Number.isNaN!=="function"&&(Number.isNaN=function(a){return typeof a==="number"&&isNaN(a)}),typeof Number.EPSILON!=="number"&&(Number.EPSILON=Math.pow(2,-52)),typeof Number.MAX_SAFE_INTEGER!=="number"&&(Number.MAX_SAFE_INTEGER=Math.pow(2,53)-1),typeof Number.MIN_SAFE_INTEGER!=="number"&&(Number.MIN_SAFE_INTEGER=-1*Number.MAX_SAFE_INTEGER),typeof Number.isInteger!=="function"&&(Number.isInteger=function(a){return Number.isFinite(a)&&Math.floor(a)===a}),typeof Number.isSafeInteger!=="function"&&(Number.isSafeInteger=function(a){return Number.isFinite(a)&&a>=Number.MIN_SAFE_INTEGER&&a<=Number.MAX_SAFE_INTEGER&&Math.floor(a)===a}),typeof Number.parseInt!=="function"&&(Number.parseInt=parseInt),typeof Number.parseFloat!=="function"&&(Number.parseFloat=parseFloat);
(function(){"use strict";var a=Array.prototype.indexOf;Array.prototype.includes||(Array.prototype.includes=function(d){"use strict";if(d!==void 0&&Array.isArray(this)&&!Number.isNaN(d))return a.apply(this,arguments)!==-1;var e=Object(this),f=e.length?b(e.length):0;if(f===0)return!1;var g=arguments.length>1?c(arguments[1]):0,h=g<0?Math.max(f+g,0):g,i=Number.isNaN(d);while(h<f){var j=e[h];if(j===d||i&&Number.isNaN(j))return!0;h++}return!1});function b(a){return Math.min(Math.max(c(a),0),Number.MAX_SAFE_INTEGER)}function c(a){a=Number(a);return Number.isFinite(a)&&a!==0?d(a)*Math.floor(Math.abs(a)):a}function d(a){return a>=0?1:-1}})();
var __p;
(function(){var a={},b=function(a,b){if(!a&&!b)return null;var c={};typeof a!=="undefined"&&(c.type=a);typeof b!=="undefined"&&(c.signature=b);return c},c=function(a,c){return b(a&&/^[A-Z]/.test(a)?a:void 0,c&&(c.params&&c.params.length||c.returns)?"function("+(c.params?c.params.map(function(a){return/\?/.test(a)?"?"+a.replace("?",""):a}).join(","):"")+")"+(c.returns?":"+c.returns:""):void 0)},d=function(a,b,c){return a},e=function(a,b,d){"sourcemeta"in __transform_includes&&(a.__SMmeta=b);if("typechecks"in __transform_includes){b=c(b?b.name:void 0,d);b&&__w(a,b)}return a},f=function(a,b,c){return c.apply(a,b)},g=function(a,b,c,d){d&&d.params&&__t.apply(a,d.params);c=c.apply(a,b);d&&d.returns&&__t([c,d.returns]);return c},h=function(b,c,d,e,f){if(f){f.callId||(f.callId=f.module+":"+(f.line||0)+":"+(f.column||0));e=f.callId;a[e]=(a[e]||0)+1}return d.apply(b,c)};typeof __transform_includes==="undefined"?(__annotator=d,__bodyWrapper=f):(__annotator=e,"codeusage"in __transform_includes?(__annotator=d,__bodyWrapper=h,__bodyWrapper.getCodeUsage=function(){return a},__bodyWrapper.clearCodeUsage=function(){a={}}):"typechecks"in __transform_includes?__bodyWrapper=g:__bodyWrapper=f)})();
__t=function(a){return a[0]},__w=function(a){return a};
Object.create||(Object.create=function(a){var b=typeof a;if(b!="object"&&b!="function")throw new TypeError("Object prototype may only be a Object or null");b=function(){a===null&&(this.__proto__=a,delete this.__proto__)};b.prototype=a;return new b()}),Object.keys||(Object.keys=function(a){var b=typeof a;if(b!="object"&&b!="function"||a===null)throw new TypeError("Object.keys called on non-object");b=Object.prototype.hasOwnProperty;var c=[];for(var d in a)b.call(a,d)&&c.push(d);return c}),Object.freeze||(Object.freeze=function(a){return a}),Object.isFrozen||(Object.isFrozen=function(){return!1}),Object.seal||(Object.seal=function(a){return a}),(function(){try{Object.getOwnPropertyDescriptor(HTMLInputElement.prototype,"value")}catch(a){Object.getOwnPropertyDescriptor=function(a){return function(b,c){try{return a(b,c)}catch(a){return{enumerable:b.propertyIsEnumerable(c),configurable:!0,get:b.__lookupGetter__(c),set:b.__lookupSetter__(c)}}}}(Object.getOwnPropertyDescriptor)}})();
(function(){var a=!{toString:!0}.propertyIsEnumerable("toString");if(!a)return;var b=["toString","toLocaleString","valueOf","hasOwnProperty","isPrototypeOf","constructor"];Object.keys=function(a){var c=typeof a;if(c!="object"&&c!="function"||a===null)throw new TypeError("Object.keys called on non-object");c=Object.prototype.hasOwnProperty;var d=[];for(var e in a)c.call(a,e)&&d.push(e);for(var f=0;f<b.length;f++){var g=b[f];c.call(a,g)&&d.push(g)}return d};Object.assign=function(a,c){if(a==null)throw new TypeError("Object.assign target cannot be null or undefined");var d=Object(a),e=Object.prototype.hasOwnProperty;for(var f=1;f<arguments.length;f++){var g=arguments[f];if(g==null)continue;var h=Object(g);for(var i in h)e.call(h,i)&&(d[i]=h[i]);for(var j=0;j<b.length;j++){var k=b[j];e.call(h,k)&&(d[k]=h[k])}}return d}})();
(function(){if(Object.assign)return;var a=Object.prototype.hasOwnProperty,b;Object.keys&&Object.keys.name!=="object_keys_polyfill"?b=function(a,b){var c=Object.keys(b);for(var d=0;d<c.length;d++)a[c[d]]=b[c[d]]}:b=function(b,c){for(var d in c)a.call(c,d)&&(b[d]=c[d])};Object.assign=function(a,c){if(a==null)throw new TypeError("Object.assign target cannot be null or undefined");var d=Object(a);for(var e=1;e<arguments.length;e++){var f=arguments[e];f!=null&&b(d,Object(f))}return d}})();
(function(a,b){var c="keys",d="values",e="entries",f=function(){var a=h(Array),b;a||(b=function(){"use strict";function a(a,b){this.$1=a,this.$2=b,this.$3=0}var b=a.prototype;b.next=function(){if(this.$1==null)return{value:void 0,done:!0};var a=this.$1,b=this.$1.length,f=this.$3,g=this.$2;if(f>=b){this.$1=void 0;return{value:void 0,done:!0}}this.$3=f+1;if(g===c)return{value:f,done:!1};else if(g===d)return{value:a[f],done:!1};else if(g===e)return{value:[f,a[f]],done:!1}};b[typeof Symbol==="function"?Symbol.iterator:"@@iterator"]=function(){return this};return a}());return{keys:a?function(a){return a.keys()}:function(a){return new b(a,c)},values:a?function(a){return a.values()}:function(a){return new b(a,d)},entries:a?function(a){return a.entries()}:function(a){return new b(a,e)}}}(),g=function(){var a=h(String),b;a||(b=function(){"use strict";function a(a){this.$1=a,this.$2=0}var b=a.prototype;b.next=function(){if(this.$1==null)return{value:void 0,done:!0};var a=this.$2,b=this.$1,c=b.length;if(a>=c){this.$1=void 0;return{value:void 0,done:!0}}var d=b.charCodeAt(a);if(d<55296||d>56319||a+1===c)d=b[a];else{c=b.charCodeAt(a+1);c<56320||c>57343?d=b[a]:d=b[a]+b[a+1]}this.$2=a+d.length;return{value:d,done:!1}};b[typeof Symbol==="function"?Symbol.iterator:"@@iterator"]=function(){return this};return a}());return{keys:function(){throw TypeError("Strings default iterator doesn't implement keys.")},values:a?function(a){return a[typeof Symbol==="function"?Symbol.iterator:"@@iterator"]()}:function(a){return new b(a)},entries:function(){throw TypeError("Strings default iterator doesn't implement entries.")}}}();function h(a){return typeof a.prototype[typeof Symbol==="function"?Symbol.iterator:"@@iterator"]==="function"&&typeof a.prototype.values==="function"&&typeof a.prototype.keys==="function"&&typeof a.prototype.entries==="function"}var i=function(){"use strict";function a(a,b){this.$1=a,this.$2=b,this.$3=Object.keys(a),this.$4=0}var b=a.prototype;b.next=function(){var a=this.$3.length,b=this.$4,f=this.$2,g=this.$3[b];if(b>=a){this.$1=void 0;return{value:void 0,done:!0}}this.$4=b+1;if(f===c)return{value:g,done:!1};else if(f===d)return{value:this.$1[g],done:!1};else if(f===e)return{value:[g,this.$1[g]],done:!1}};b[typeof Symbol==="function"?Symbol.iterator:"@@iterator"]=function(){return this};return a}(),j={keys:function(a){return new i(a,c)},values:function(a){return new i(a,d)},entries:function(a){return new i(a,e)}};function k(a,b){if(typeof a==="string")return g[b||d](a);else if(Array.isArray(a))return f[b||d](a);else if(a[typeof Symbol==="function"?Symbol.iterator:"@@iterator"])return a[typeof Symbol==="function"?Symbol.iterator:"@@iterator"]();else return j[b||e](a)}Object.assign(k,{KIND_KEYS:c,KIND_VALUES:d,KIND_ENTRIES:e,keys:function(a){return k(a,c)},values:function(a){return k(a,d)},entries:function(a){return k(a,e)},generic:j.entries});a.FB_enumerate=k})(typeof global==="undefined"?this:global);
(function(a,b){var c=a.window||a;function d(){return"f"+(Math.random()*(1<<30)).toString(16).replace(".","")}function e(a){var b=a?a.ownerDocument||a:document;b=b.defaultView||c;return!!(a&&(typeof b.Node==="function"?a instanceof b.Node:typeof a==="object"&&typeof a.nodeType==="number"&&typeof a.nodeName==="string"))}function f(a){a=c[a];if(a==null)return!0;if(typeof c.Symbol!=="function")return!0;var b=a.prototype;return a==null||typeof a!=="function"||typeof b.clear!=="function"||new a().size!==0||typeof b.keys!=="function"||typeof b.forEach!=="function"}var g=a.FB_enumerate,h=function(){if(!f("Map"))return c.Map;var b="key",i="value",j="key+value",k="$map_",l,m="IE_HASH_",a=function(){"use strict";function a(a){if(!r(this))throw new TypeError("Wrong map object type.");q(this);if(a!=null){a=g(a);var b;while(!(b=a.next()).done){if(!r(b.value))throw new TypeError("Expected iterable items to be pair objects.");this.set(b.value[0],b.value[1])}}}var c=a.prototype;c.clear=function(){q(this)};c.has=function(a){a=o(this,a);return!!(a!=null&&this._mapData[a])};c.set=function(a,b){var c=o(this,a);c!=null&&this._mapData[c]?this._mapData[c][1]=b:(c=this._mapData.push([a,b])-1,p(this,a,c),this.size+=1);return this};c.get=function(a){a=o(this,a);if(a==null)return void 0;else return this._mapData[a][1]};c["delete"]=function(a){var b=o(this,a);if(b!=null&&this._mapData[b]){p(this,a,void 0);this._mapData[b]=void 0;this.size-=1;return!0}else return!1};c.entries=function(){return new n(this,j)};c.keys=function(){return new n(this,b)};c.values=function(){return new n(this,i)};c.forEach=function(a,b){if(typeof a!=="function")throw new TypeError("Callback must be callable.");a=a.bind(b||void 0);b=this._mapData;for(var c=0;c<b.length;c++){var d=b[c];d!=null&&a(d[1],d[0],this)}};c[typeof Symbol==="function"?Symbol.iterator:"@@iterator"]=function(){return this.entries()};return a}(),n=function(){"use strict";function c(a,c){if(!(r(a)&&a._mapData))throw new TypeError("Object is not a map.");if([b,j,i].indexOf(c)===-1)throw new Error("Invalid iteration kind.");this._map=a;this._nextIndex=0;this._kind=c}var d=c.prototype;d.next=function(){if(!this instanceof a)throw new TypeError("Expected to be called on a MapIterator.");var c=this._map,d=this._nextIndex,e=this._kind;if(c==null)return s(void 0,!0);c=c._mapData;while(d<c.length){var f=c[d];d+=1;this._nextIndex=d;if(f)if(e===b)return s(f[0],!1);else if(e===i)return s(f[1],!1);else if(e)return s(f,!1)}this._map=void 0;return s(void 0,!0)};d[typeof Symbol==="function"?Symbol.iterator:"@@iterator"]=function(){return this};return c}();function o(a,b){if(r(b)){var c=w(b);return c?a._objectIndex[c]:void 0}else{c=k+b;if(typeof b==="string")return a._stringIndex[c];else return a._otherIndex[c]}}function p(a,b,c){var d=c==null;if(r(b)){var e=w(b);e||(e=x(b));d?delete a._objectIndex[e]:a._objectIndex[e]=c}else{e=k+b;typeof b==="string"?d?delete a._stringIndex[e]:a._stringIndex[e]=c:d?delete a._otherIndex[e]:a._otherIndex[e]=c}}function q(a){a._mapData=[],a._objectIndex={},a._stringIndex={},a._otherIndex={},a.size=0}function r(a){return a!=null&&(typeof a==="object"||typeof a==="function")}function s(a,b){return{value:a,done:b}}a.__isES5=function(){try{Object.defineProperty({},"__.$#x",{});return!0}catch(a){return!1}}();function t(b){if(!a.__isES5||!Object.isExtensible)return!0;else return Object.isExtensible(b)}function u(a){var b;switch(a.nodeType){case 1:b=a.uniqueID;break;case 9:b=a.documentElement.uniqueID;break;default:return null}if(b)return m+b;else return null}var v=d();function w(b){if(b[v])return b[v];else if(!a.__isES5&&b.propertyIsEnumerable&&b.propertyIsEnumerable[v])return b.propertyIsEnumerable[v];else if(!a.__isES5&&e(b)&&u(b))return u(b);else if(!a.__isES5&&b[v])return b[v]}var x=function(){var b=Object.prototype.propertyIsEnumerable,c=0;return function(d){if(t(d)){c+=1;if(a.__isES5)Object.defineProperty(d,v,{enumerable:!1,writable:!1,configurable:!1,value:c});else if(d.propertyIsEnumerable)d.propertyIsEnumerable=function(){return b.apply(this,arguments)},d.propertyIsEnumerable[v]=c;else if(e(d))d[v]=c;else throw new Error("Unable to set a non-enumerable property on object.");return c}else throw new Error("Non-extensible objects are not allowed as keys.")}}();return __annotator(a,{name:"Map"})}();b=function(){if(!f("Set"))return c.Set;var a=function(){"use strict";function a(a){if(this==null||typeof this!=="object"&&typeof this!=="function")throw new TypeError("Wrong set object type.");b(this);if(a!=null){a=g(a);var c;while(!(c=a.next()).done)this.add(c.value)}}var c=a.prototype;c.add=function(a){this._map.set(a,a);this.size=this._map.size;return this};c.clear=function(){b(this)};c["delete"]=function(a){a=this._map["delete"](a);this.size=this._map.size;return a};c.entries=function(){return this._map.entries()};c.forEach=function(a){var b=arguments[1],c=this._map.keys(),d;while(!(d=c.next()).done)a.call(b,d.value,d.value,this)};c.has=function(a){return this._map.has(a)};c.values=function(){return this._map.values()};c.keys=function(){return this.values()};c[typeof Symbol==="function"?Symbol.iterator:"@@iterator"]=function(){return this.values()};return a}();function b(a){a._map=new h(),a.size=a._map.size}return __annotator(a,{name:"Set"})}();a.Map=h;a.Set=b})(typeof global==="undefined"?this:global);
Date.now||(Date.now=function(){return new Date().getTime()});
(function(){if(!Date.prototype.toISOString){var a=function(a){return a<10?"0"+a:a};Date.prototype.toISOString=function(){if(!isFinite(this))throw new Error("Invalid time value");var b=this.getUTCFullYear();b=(b<0?"-":b>9999?"+":"")+("00000"+Math.abs(b)).slice(0<=b&&b<=9999?-4:-6);return b+"-"+a(this.getUTCMonth()+1)+"-"+a(this.getUTCDate())+"T"+a(this.getUTCHours())+":"+a(this.getUTCMinutes())+":"+a(this.getUTCSeconds())+"."+(this.getUTCMilliseconds()/1e3).toFixed(3).slice(2,5)+"Z"}}})();
Function.prototype.bind||(Function.prototype.bind=function(a){if(typeof this!=="function")throw new TypeError("Bind must be called on a function");var b=this,c=Array.prototype.slice,d=c.call(arguments,1);function e(){var e=b.prototype&&this instanceof b;return b.apply(!e&&a||this,d.concat(c.call(arguments)))}e.prototype=b.prototype;e.displayName="bound:"+(b.displayName||b.name||"(?)");e.toString=function(){return"bound: "+b};return e});
typeof window!=="undefined"&&window.JSON&&JSON.stringify(["\u2028\u2029"])==='["\u2028\u2029"]'&&(JSON.stringify=function(a){var b=/\u2028/g,c=/\u2029/g;return function(d,e,f){d=a.call(this,d,e,f);d&&(-1<d.indexOf("\u2028")&&(d=d.replace(b,"\\u2028")),-1<d.indexOf("\u2029")&&(d=d.replace(c,"\\u2029")));return d}}(JSON.stringify));
if(typeof JSON==="object"&&typeof JSON.parse==="function")try{JSON.parse(null)}catch(a){JSON.originalParse=JSON.parse,JSON.parse=function(a){return a===null?null:JSON.originalParse(a)}}
typeof Math.log2!=="function"&&(Math.log2=function(a){return Math.log(a)/Math.LN2}),typeof Math.log10!=="function"&&(Math.log10=function(a){return Math.log(a)/Math.LN10}),typeof Math.trunc!=="function"&&(Math.trunc=function(a){return a<0?Math.ceil(a):Math.floor(a)}),typeof Math.sign!=="function"&&(Math.sign=function(a){return+(a>0)-+(a<0)||+a});
(function(){var a=Object.prototype.hasOwnProperty;Object.entries=function(b){if(b==null)throw new TypeError("Object.entries called on non-object");var c=[];for(var d in b)a.call(b,d)&&c.push([d,b[d]]);return c};typeof Object.fromEntries!=="function"&&(Object.fromEntries=function(a){var b={};for(var a=a,c=Array.isArray(a),d=0,a=c?a:a[typeof Symbol==="function"?Symbol.iterator:"@@iterator"]();;){var e;if(c){if(d>=a.length)break;e=a[d++]}else{d=a.next();if(d.done)break;e=d.value}e=e;var f=e[0];e=e[1];b[f]=e}return b});Object.values=function(b){if(b==null)throw new TypeError("Object.values called on non-object");var c=[];for(var d in b)a.call(b,d)&&c.push(b[d]);return c}})();
(function(){Object.is||(Object.is=function(a,b){if(a===b)return a!==0||1/a===1/b;else return a!==a&&b!==b})})();
Object.prototype.hasOwnProperty.call({},"__proto__")&&(Object.prototype.hasOwnProperty=function(a){return function(b){return b!="__proto__"&&a.call(this,b)}}(Object.prototype.hasOwnProperty));
(function(a){a.__m=function(a,b){a.__SMmeta=b;return a}})(this);
typeof String.fromCodePoint!=="function"&&(String.fromCodePoint=function(){var a=[];for(var b=0;b<arguments.length;b++){var c=Number(b<0||arguments.length<=b?void 0:arguments[b]);if(!isFinite(c)||Math.floor(c)!=c||c<0||1114111<c)throw RangeError("Invalid code point "+c);c<65536?a.push(String.fromCharCode(c)):(c-=65536,a.push(String.fromCharCode((c>>10)+55296),String.fromCharCode(c%1024+56320)))}return a.join("")});
String.prototype.startsWith||(String.prototype.startsWith=function(a){"use strict";if(this==null)throw TypeError();var b=String(this),c=arguments.length>1?Number(arguments[1])||0:0,d=Math.min(Math.max(c,0),b.length);return b.indexOf(String(a),c)==d}),String.prototype.endsWith||(String.prototype.endsWith=function(a){"use strict";if(this==null)throw TypeError();var b=String(this),c=b.length,d=String(a),e=arguments.length>1?Number(arguments[1])||0:c,f=Math.min(Math.max(e,0),c),g=f-d.length;return g<0?!1:b.lastIndexOf(d,g)==g}),String.prototype.includes||(String.prototype.includes=function(a){"use strict";if(this==null)throw TypeError();var b=String(this),c=arguments.length>1?Number(arguments[1])||0:0;return b.indexOf(String(a),c)!=-1}),String.prototype.repeat||(String.prototype.repeat=function(a){"use strict";if(this==null)throw TypeError();var b=String(this);a=Number(a)||0;if(a<0||a===Infinity)throw RangeError();if(a===1)return b;var c="";while(a)a&1&&(c+=b),(a>>=1)&&(b+=b);return c}),String.prototype.codePointAt||(String.prototype.codePointAt=function(a){"use strict";if(this==null)throw TypeError("Invalid context: "+this);var b=String(this),c=b.length;a=Number(a)||0;if(a<0||c<=a)return void 0;var d=b.charCodeAt(a);if(55296<=d&&d<=56319&&c>a+1){c=b.charCodeAt(a+1);if(56320<=c&&c<=57343)return(d-55296)*1024+c-56320+65536}return d});
String.prototype.contains||(String.prototype.contains=String.prototype.includes);
String.prototype.padStart||(String.prototype.padStart=function(a,b){a=a>>0;b=String(b||" ");if(this.length>a)return String(this);else{a=a-this.length;a>b.length&&(b+=b.repeat(a/b.length));return b.slice(0,a)+String(this)}}),String.prototype.padEnd||(String.prototype.padEnd=function(a,b){a=a>>0;b=String(b||" ");if(this.length>a)return String(this);else{a=a-this.length;a>b.length&&(b+=b.repeat(a/b.length));return String(this)+b.slice(0,a)}});
String.prototype.trimLeft||(String.prototype.trimLeft=function(){return this.replace(/^\s+/,"")}),String.prototype.trimRight||(String.prototype.trimRight=function(){return this.replace(/\s+$/,"")});
String.prototype.trim||(String.prototype.trim=function(){if(this==null)throw new TypeError("String.prototype.trim called on null or undefined");return String.prototype.replace.call(this,/^\s+|\s+$/g,"")});
(function(){var a,b=String.prototype.split,c=/()??/.exec("")[1]===a;String.prototype.split=function(d,e){var f=this;if(Object.prototype.toString.call(d)!=="[object RegExp]")return b.call(f,d,e);var g=[],h=(d.ignoreCase?"i":"")+(d.multiline?"m":"")+(d.extended?"x":"")+(d.sky?"y":""),i=0,d=new RegExp(d.source,h+"g"),j,k,l;f+="";c||(j=new RegExp("^"+d.source+"$(?!\\s)",h));e=e===a?-1>>>0:e>>>0;while(k=d.exec(f)){h=k.index+k[0].length;if(h>i){g.push(f.slice(i,k.index));!c&&k.length>1&&k[0].replace(j,function(){for(var b=1;b<arguments.length-2;b++)arguments[b]===a&&(k[b]=a)});k.length>1&&k.index<f.length&&Array.prototype.push.apply(g,k.slice(1));l=k[0].length;i=h;if(g.length>=e)break}d.lastIndex===k.index&&d.lastIndex++}i===f.length?(l||!d.test(""))&&g.push(""):g.push(f.slice(i));return g.length>e?g.slice(0,e):g}})();
(function(a){var b=a.babelHelpers={},c=Object.prototype.hasOwnProperty;b.inheritsLoose=function(a,b){Object.assign(a,b);a.prototype=Object.create(b&&b.prototype);a.prototype.constructor=a;a.__superConstructor__=b;return b};b.wrapNativeSuper=function(a){var c=typeof Map==="function"?new Map():void 0;b.wrapNativeSuper=function(a){if(a===null)return null;if(typeof a!=="function")throw new TypeError("Super expression must either be null or a function");if(c!==void 0){if(c.has(a))return c.get(a);c.set(a,d)}b.inheritsLoose(d,a);function d(){a.apply(this,arguments)}return d};return b.wrapNativeSuper(a)};b.assertThisInitialized=function(a){if(a===void 0)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return a};b._extends=Object.assign;b["extends"]=b._extends;b.construct=function(a,b){var c=[null];c.push.apply(c,b);return new(Function.prototype.bind.apply(a,c))()};b.objectWithoutPropertiesLoose=function(a,b){var d={};for(var e in a){if(!c.call(a,e)||b.indexOf(e)>=0)continue;d[e]=a[e]}return d};b.taggedTemplateLiteralLoose=function(a,b){b||(b=a.slice(0));a.raw=b;return a};b.bind=Function.prototype.bind})(typeof global==="undefined"?self:global);
var require,__d;(function(a){var b={},c={},d=["global","require","requireDynamic","requireLazy","module","exports"];require=function(d,e){if(Object.prototype.hasOwnProperty.call(c,d))return c[d];if(!Object.prototype.hasOwnProperty.call(b,d)){if(e)return null;throw new Error("Module "+d+" has not been defined")}e=b[d];var f=e.deps,g=e.factory.length,h,i=[];for(var j=0;j<g;j++){switch(f[j]){case"module":h=e;break;case"exports":h=e.exports;break;case"global":h=a;break;case"require":h=require;break;case"requireDynamic":h=null;break;case"requireLazy":h=null;break;default:h=require.call(null,f[j])}i.push(h)}e.factory.apply(a,i);c[d]=e.exports;return e.exports};__d=function(a,e,f,g){typeof f==="function"?(b[a]={factory:f,deps:d.concat(e),exports:{}},g===3&&require.call(null,a)):c[a]=f};a.$RefreshReg$=function(){};a.$RefreshSig$=function(){return function(a){return a}}})(this);
typeof console==="undefined"&&(function(){function a(){}console={log:a,info:a,warn:a,debug:a,dir:a,error:a}})();
(function(a){var b=a.performance;b&&b.setResourceTimingBufferSize&&(b.setResourceTimingBufferSize(1e5),b.onresourcetimingbufferfull=function(){a.__isresourcetimingbufferfull=!0},b.setResourceTimingBufferSize=function(){})})(this);
__d("Log",[],(function(a,b,c,d,e,f){"use strict";__p&&__p();a={DEBUG:3,INFO:2,WARNING:1,ERROR:0};b=function(a,b,c){for(var d=arguments.length,e=new Array(d>3?d-3:0),f=3;f<d;f++)e[f-3]=arguments[f];var h=0,i=c.replace(/%s/g,function(){return String(e[h++])}),j=window.console;j&&g.level>=b&&j[a in j?a:"log"](i)};var g={level:-1,Level:a,debug:b.bind(null,"debug",a.DEBUG),info:b.bind(null,"info",a.INFO),warn:b.bind(null,"warn",a.WARNING),error:b.bind(null,"error",a.ERROR),log:b};e.exports=g}),null);
__d("QueryString",[],(function(a,b,c,d,e,f){__p&&__p();function a(a){__p&&__p();var b=[];Object.keys(a).sort().forEach(function(c){var d=a[c];if(d===void 0)return;if(d===null){b.push(c);return}b.push(encodeURIComponent(c)+"="+encodeURIComponent(d))});return b.join("&")}function b(a,b){__p&&__p();b===void 0&&(b=!1);var c={};if(a==="")return c;a=a.split("&");for(var d=0;d<a.length;d++){var e=a[d].split("=",2),f=decodeURIComponent(e[0]);if(b&&Object.prototype.hasOwnProperty.call(c,f))throw new URIError("Duplicate key: "+f);c[f]=e.length===2?decodeURIComponent(e[1]):null}return c}function c(a,b){return a+(a.indexOf("?")!==-1?"&":"?")+(typeof b==="string"?b:g.encode(b))}var g={encode:a,decode:b,appendToUrl:c};e.exports=g}),null);
__d("sdk.FeatureFunctor",[],(function(a,b,c,d,e,f){__p&&__p();function g(a,b,c){if(a.features&&b in a.features){a=a.features[b];if(typeof a==="object"&&typeof a.rate==="number")if(a.rate&&Math.random()*100<=a.rate)return a.value||!0;else return a.value?null:!1;else return a}return c}function a(a){return function(){for(var b=arguments.length,c=new Array(b),d=0;d<b;d++)c[d]=arguments[d];if(c.length<2)throw new Error("Default value is required");var e=c[0],f=c[1];return g(a,e,f)}}e.exports={create:a}}),null);
__d("sdk.feature",["JSSDKConfig","sdk.FeatureFunctor"],(function(a,b,c,d,e,f){e.exports=b("sdk.FeatureFunctor").create(b("JSSDKConfig"))}),null);
__d("wrapFunction",[],(function(a,b,c,d,e,f){__p&&__p();var g={};a=function(a,b,c){return function(){var d=b in g?g[b](a,c):a;for(var e=arguments.length,f=new Array(e),h=0;h<e;h++)f[h]=arguments[h];return d.apply(this,f)}};a.setWrapper=function(a,b){g[b]=a};e.exports=a}),null);
__d("XDM",["Log","sdk.feature","wrapFunction"],(function(a,b,c,d,e,f){__p&&__p();var g={},h={transports:[]};function i(a){__p&&__p();var b={},c=a.length,d=h.transports;while(c--)b[a[c]]=1;c=d.length;while(c--){a=d[c];var e=g[a];if(!b[a]&&e.isAvailable())return a}return null}a={register:function(a,c){b("Log").debug("Registering %s as XDM provider",a),h.transports.push(a),g[a]=c},create:function(a){__p&&__p();if(!a.whenReady&&!a.onMessage){var c="An instance without whenReady or onMessage makes no sense";b("Log").error(c);throw new Error(c)}a.channel||(b("Log").warn("Missing channel name, selecting at random"),a.channel="f"+(Math.random()*(1<<30)).toString(16).replace(".",""));a.whenReady||(a.whenReady=function(){});a.onMessage||(a.onMessage=function(){});c=(c=a.transport)!=null?c:i(a.blacklist||[]);var d=c!=null?g[c]:null;if(d!=null&&d.isAvailable()){b("Log").debug("%s is available",c);d.init(a);return c}return null}};var j=/\.facebook\.com(\/|$)/;function k(a,b){var c=window.location.hostname.match(/\.(facebook\.sg|facebookcorewwwi\.onion)$/);c=c?c[1]:"facebook.com";new Image().src="https://www."+c+"/common/scribe_endpoint.php?c="+encodeURIComponent(a)+"&m="+encodeURIComponent(JSON.stringify(b))}a.register("postmessage",function(){__p&&__p();var a=!1;return{isAvailable:function(){return!!window.postMessage},init:function(c){__p&&__p();b("Log").debug("init postMessage: "+c.channel);var d="_FB_"+c.channel,e={send:function(a,c,d,e){__p&&__p();if(window===d){b("Log").error("Invalid windowref, equal to window (self)");throw new Error()}b("Log").debug("sending to: %s (%s)",c,e);var f=function(){try{d.postMessage("_FB_"+e+a,c)}catch(a){b("sdk.feature")("xdm_scribe_logging",!1)&&k("jssdk_error",{error:"POST_MESSAGE",extra:{message:a.message+", html/js/modules/XDM.js:231"}});throw a}};f()}};if(a){c.whenReady(e);return}window.addEventListener("message",b("wrapFunction")(function(a){__p&&__p();var e=a.data,f=a.origin||"native";if(!/^(https?:\/\/|native$)/.test(f)){b("Log").debug("Received message from invalid origin type: %s",f);return}if(f!=="native"&&!(j.test(location.hostname)||j.test(a.origin)))return;if(typeof e==="object"){if(a.data.xdArbiterSyn!=null||a.data.xdArbiterHandleMessage!=null||a.data.xdArbiterRegister!=null){b("Log").error("XDM at "+(window.name!=null&&window.name!==""?window.name:window==top?"top":"[no name]")+" ignoring message intended for XdArbiter. "+JSON.stringify(e));return}if(a.data.xdArbiterAck!=null){b("Log").debug("ignoring xdArbiterAck intended for initXdArbiter");return}if(a.data.xdArbiterRegisterAck!=null){b("Log").debug("ignoring xdArbiterRegisterAck intended for initXdArbiter");return}b("Log").warn("Received message of type %s from %s, expected a string. %s",typeof e,f,JSON.stringify(e));return}b("Log").debug("received message %s from %s",e,f);typeof e==="string"&&e.substring(0,d.length)==d&&(e=e.substring(d.length));c.onMessage(e,f)},"entry","onMessage"));c.whenReady(e);a=!0}}}());e.exports=a}),null);
__d("getFacebookOriginForTarget",["Log"],(function(a,b,c,d,e,f){function a(a,c){c===void 0&&(c=top);var d=0,e=!1,f=200;window.addEventListener("message",function(d){d.source===c&&d.data.xdArbiterAck&&(/\.facebook\.com$/.test(d.origin)&&/^https:/.test(d.origin)?e===!1&&(e=!0,b("Log").debug("initXdArbiter got xdArbiterAck from "+d.origin),a(d.origin)):b("Log").error("xdAbiterAck was not from Facebook: ",d.origin))},!1);c.postMessage({xdArbiterSyn:!0},"*");d=window.setInterval(function(){!e&&f>0?(f--,b("Log").debug("resending xdArbiterSyn"),c.postMessage({xdArbiterSyn:!0},"*")):window.clearInterval(d)},200)}e.exports=a}),null);
__d("resolveWindow",[],(function(a,b,c,d,e,f){__p&&__p();function a(a){__p&&__p();if(a==null)return null;var b=window;a=a.split(".");try{for(var c=0;c<a.length;c++){var d=a[c],e=/^frames\[[\'\"]?([a-zA-Z0-9\-_]+)[\'\"]?\]$/.exec(d);if(e)b=b.frames[e[1]];else if(d==="opener"||d==="parent"||d==="top")b=b[d];else return null}}catch(a){return null}return b}e.exports=a}),null);
__d("initXdArbiter",["QueryString","resolveWindow","getFacebookOriginForTarget","Log","XDM"],(function(a,b,c,d,e,f){__p&&__p();(function(){__p&&__p();var a=b("QueryString"),c=b("resolveWindow"),d=b("getFacebookOriginForTarget"),e=b("Log"),f=b("XDM");function g(a){return a?a.replace(/[\"\'<>\(\)\\@]/g,""):a}function h(){return!location.ancestorOrigins?!1:!/\.facebook\.com$/.test(location.ancestorOrigins[1])}function i(a,b,c){__p&&__p();if(!(window!=parent&&window.parent!=window.parent.parent)||h()){c("");return}var d=0,f=!1,g=200;window.addEventListener("message",function(a){if(a.source==parent.parent&&a.data.xdArbiterRegisterAck)if(/\.facebook\.com$/.test(a.origin)&&/^https:/.test(a.origin)){f=!0;e.debug("initXdArbiter got xdArbiterRegisterAck for "+a.data.xdArbiterRegisterAck+" from "+a.origin);c(a.data.xdArbiterRegisterAck);return}else e.error("xdAbiterRegisterAck was not from Facebook: ",a.origin)},!1);parent.parent.postMessage({xdArbiterRegister:!0,xdProxyName:a,origin:b},"*");d=window.setInterval(function(){if(!f&&g>0)g--,e.debug("resending xdArbiterRegister"),parent.parent.postMessage({xdArbiterRegister:!0,xdProxyName:a,origin:b},"*");else{window.clearInterval(d);if(g===0){e.error("xdAbiterRegisterAck not received");c("");return}}},200)}function j(a,b){var c=50;b=function(){--c||window.clearInterval(d);try{a(),window.clearInterval(d)}catch(a){}};var d=window.setInterval(b,50);b()}function k(){__p&&__p();var a=null;if(p.origin!=null){var b=/https?:\/\/[^\/]*/.exec(p.origin);a=b===null?null:b[0]}j(function(){__p&&__p();var b=c(p.relation);if(b!=null){b=b.frames["fb_xdm_frame_"+q];if(b!=null){if(b.location.search==="undefined")throw new Error("Proxy not ready");location.search===b.location.search?b.proxyMessage(o,a):e.error("Version mismatch: %s, %s",location.search,b.location.search)}else e.error("Couldn't get proxy window reference for relation %s",p.relation)}},50)}function l(){__p&&__p();var a=null;if(p.origin!=null){var b=/https?:\/\/[^\/]*/.exec(p.origin);a=b===null?null:b[0]}if(window.__fbNative&&window.__fbNative.postMessage)window.__fbNative.postMessage(o,a);else{b=function b(c){window.removeEventListener("fbNativeReady",b),window.__fbNative.postMessage(o,a)};window.addEventListener("fbNativeReady",b)}}var m=/#(.*)|$/.exec(document.URL),n=/#(.*)|$/.exec(window.location.href),o=m!==null&&m[1]?m[1]:n!==null&&n[1]?n[1]:"";window==top&&(location.hash="");if(!o){e.error("xd_arbiter.php loaded without a valid hash, referrer: %s",document.referrer);return}var p=a.decode(o,!0),q=location.protocol.replace(":","");if(p.relation){window==top&&/FBAN\/\w+;/i.test(navigator.userAgent)&&!/FBAN\/mLite;/.test(navigator.userAgent)?(e.info("Native proxy"),l()):(e.info("Legacy proxy to %s",p.relation),k());return}if(!new RegExp(q+"$").test(window.name)){e.info("Redirection to %s detected, aborting",q);return}m=g(p.transport);var r=g(p.channel),s=g(p.origin),t=g(p.xd_name);if(!/^https?/.test(s)){e.error("Invalid origin presented, aborting.");return}n=document.body;if(n===null){e.error("Invalid runtime environment (no document.body), aborting.");return}var u={};f.create({root:n,transport:m,channel:r+"_"+q,onMessage:function(b,f){__p&&__p();if(s!==f){e.info("Received message from unknown origin %s, expected %s.",f,s);return}var g=null,i=b;typeof b==="string"?/^FB_RPC:/.test(b)||(i=a.decode(b),g=i.relation):g=b.relation;if((g==null||g==="")&&h()){e.error("Can not use parent.parent to reach facebook.com");return}var j=g!=null&&g!=""&&typeof g==="string"?c(g):parent.parent;if(j==null)e.error("Could not reach facebook.com using %s",g);else{var k=function(a){try{j.postMessage({xdArbiterHandleMessage:!0,message:i,origin:s},a)}catch(a){e.error("Could not reach facebook.com using %s",g)}};u[j]!=null?k(u[j]):d(function(a){u[j]=a,k(a)},j)}},whenReady:function(b){window.proxyMessage=function(a,c){c===s?b.send(a,s,parent,r):e.error("Failed proxying to %s, expected %s",c,s)};var c={xd_action:"proxy_ready",logged_in:/\bc_user=/.test(document.cookie)};i(t,s,function(d){d!==""&&(c.registered=d),b.send(a.encode(c),s,parent,r)})}})})()}),null);__d("JSSDKConfig",[],{"features":{"allow_non_canvas_app_events":false,"error_handling":{"rate":4},"e2e_ping_tracking":{"rate":0.1},"xd_timeout":{"rate":1,"value":60000},"use_bundle":false,"should_log_response_error":true,"popup_blocker_scribe_logging":{"rate":100},"https_only_enforce_starting":2538809200000,"https_only_learn_more":"https:\/\/developers.facebook.com\/blog\/post\/2018\/06\/08\/enforce-https-facebook-login\/","https_only_scribe_logging":{"rate":1},"log_perf":{"rate":0.001},"use_cors_oauth_status":{"rate":100},"xd_arbiter_register_new":{"rate":100},"xd_arbiter_handle_message_new":{"rate":100}}});require("initXdArbiter"); require('initXdArbiter'); </script><b id="warning" style="display: none; color:red"> SECURITY WARNING: Please treat the URL above as you would your password and do not share it with anyone. See the <a href="https://l.facebook.com/l.php?u=https%3A%2F%2Fon.fb.me%2F1mXNHhm&h=AT3yF5edG0llRLfN7DdM84969UKCeaiLUHhws4r99wCpwo5WdmEe-unIrbXnhWXktCmNzoHF0smlnZJAU2FIrNb_Wp6I1dYsaADr6CFFedqEpqg1DZTiQLsakOGtanU5_hNoMh259MrwCIOCaCdK" target="_blank" rel="noopener nofollow" data-lynx-mode="asynclazy">Facebook Help Center</a> for more information. </b><script>if (window == top) { setTimeout(function() { document.getElementById("warning").style.display = 'block'; }, 2000);}</script></body></html>
lên kênh của GrearVN để giải quyết những vấn đề về máy tính nhé bạn
I. Nội qui tham gia "Giúp tôi giải toán"
1. Không đưa câu hỏi linh tinh lên diễn đàn, chỉ đưa các bài mà mình không giải được hoặc các câu hỏi hay lên diễn đàn;
2. Không trả lời linh tinh, không phù hợp với nội dung câu hỏi trên diễn đàn.
3. Không "Đúng" vào các câu trả lời linh tinh nhằm gian lận điểm hỏi đáp.
Các bạn vi phạm 3 điều trên sẽ bị giáo viên của Online Math trừ hết điểm hỏi đáp, có thể bị khóa tài khoản hoặc bị cấm vĩnh viễn không đăng nhập vào trang web.
haizz,nếu kb thì pk nc nx chứ
^^,đg buồn
ai lm mk vui đc hông nak
no no no .... no no
khó giải thích lắm