A.y=2lnx(x>0) | B.y=ln(2x)(x>0) | ||||
C.y=
| D.y=
|
1 |
2 |
1 |
2 |
1 |
2 |
1 |
x+5 |
A.y=
| B.y=x+5(x∈R) | C.y=
| D.y=x-5(x∈R) |
1 |
x |
A.x(x≠0) | B.
| C.-x(x≠0) | D.-
|
x |
A.f-1(x)≤2x-1 | B.f-1(x)≤2x+1 | C.f-1(x)≥2x-1 | D.f-1(x)≥2x+1 |
1 |
2 |
A.(
| B.(-∞,
| C.(
| D.[a,+∞) |
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