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A.y=log5x+1 B.y=logx5+1
C.y=log5(x-1) D.y=log5x-1
函数的反函数是
(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)
A.y=-arccos(x-1)(0≤x≤2)
B.y=-arccos(x-1)(0≤x≤2)
C.y=arccos(x-1)(0≤x≤2)
D.y=+arccos(x-1)(0≤x≤2)
函数y=+1(x>0)的反函数是
A.y=log2,x∈(1,2)
B.y=-log2,x∈(1,2)
C.y=log2,x∈(1,2]
D.y=-log2,x∈(1,2]
函数y=0.2-x+1的反函数是( )