x(1-x)>x(2x-3)+1的解集
人气:196 ℃ 时间:2020-05-22 07:32:59
解答
x(1-x)>x(2x-3)+1
x-x²>2x²-3x+1
2x²+x²-3x-x+1<0
3x²-4x+1<0
(x-1)(3x-1)<0
∴1/3<x<1神马
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