题目内容
函数y=4x+1的反函数是
A.y=log4x+1
B.y=log4(x+1)
C.y=log4x-1
D.y=log4(x-1)
函数y=-(x≥1)的反函数是
[ ]
A.y=+1(x≥0) B.y=+1(x≤0)
C.y=-1(x≤0) D.y=+1(x∈R)
函数y=-(x≤1)的反函数是
A.y=x2-1(-1≤x≤0)
B.y=x2-1(0≤x≤1)
C.y=1-x2(x≤0)
D.y=1-x2(0≤x≤1)
y=x2-1(-1≤x≤0)
y=x2-1(0≤x≤1)
y=1-x2(0≤x≤1)
y=1-x2(x≤0)
函数y=-(x≤1)的反函数是( )
A.y=x2-1(-1≤x≤0) B.y=x2-1(0≤x≤1)
C.y=1-x2(x≤0) D.y=1-x2(0≤x≤1)