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KL
1
![](https://rs.olm.vn/images/avt/0.png?1311)
Những câu hỏi liên quan
![](https://rs.olm.vn/images/avt/0.png?1311)
CM
4 tháng 1 2018
Đáp án C
Đặt t = 2 x 2 − 2 x , t ∈ 0 ; + ∞ ⇒ B P T ⇔ 2 t + t ≥ m 1
Ta có t + 2 t ≥ 2 t . 2 t = 2 2 ⇒ 1 ⇔ m ≤ 2 2
![](https://rs.olm.vn/images/avt/0.png?1311)
28 tháng 7 2023
3:
x^2-2x+1-m^2<=0
=>(x-1)^2-m^2<=0
=>(x-1)^2<=m^2
=>-m<=x-1<=m
=>-m+1<=x<=m+1
mà x thuộc [-1;2]
nên -m+1>=-1 và m+1<=2
=>-m>=-2 và m<=1
=>m<=2 và m<=1
=>m<=1
HP
1
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này![](data:image/png;base64,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)
để đánh rõ hơn nha :vvvv .