x-1 |
A.y=(x-1)2+1(x∈R) | B.y=(x-1)2+1(x≥1) | ||
C.y=(x-1)2+1(x≥0) | D.y=
|
x-1 |
x-1 |
A.y=1+log3x(x>0) | B.y=-1+log3x(x>0) |
C.y=1+log3x(1≤x<3) | D.y=-1+log3x(1≤x<3) |
x |
x-2 |
A.(1,+∞) | B.(0,+∞) | C.(0,1) | D.(1,2) |
1 |
e2 |
A.2 | B.-2 | C.3 | D.-3 |
A.3 | B.-2 | C.2 | D.-3 |
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