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16 tháng 11 2019

1. S

2.D

3.S

16 tháng 11 2019

1,n+1, n+3, n+5 là  ba số  tự̣ nhiên  lẻ̉̉̉   liên tiếp tăng dân ( n€N) sai

2,  hai tia ox va oy cung nam tren mot duong thi doi nhau   sai

3,  co mot va chi mot duong di qua 2 diem phan biet đúng

19 tháng 11 2017

ttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt

16 tháng 8 2016

Đó chính là tính chất đường thẳng đi qua hai điểm