题目内容
(08年北师大附中月考)函数y = +1(x≥1)的反函数是( )
A.y = x2-2x +2(x<1 B.y = x2-2x +2(x≥1
C.y = x2-2x (x<1 D.y = x2-2x (x≥1
答案:B
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题目内容
(08年北师大附中月考)函数y = +1(x≥1)的反函数是( )
A.y = x2-2x +2(x<1 B.y = x2-2x +2(x≥1
C.y = x2-2x (x<1 D.y = x2-2x (x≥1
答案:B