A.(2
| B.(
| C.(
| D.(-2,
|
a |
a |
a |
a |
A.y=log3(x+1)(x>-1) | B.y=log3(x+1)(x>0) |
C.y=log3(x-1)(x>1) | D.y=log3(x-1)(x>0) |
A.R | B.(6,+∞) | C.(5,+∞) | D.[5,+∞) |
A.f(2x)=e2x(x∈R) | B.f(2x)=ln2•lnx(x>0) |
C.f(2x)=2ex(x∈R) | D.f(2x)=lnx+ln2(x>0) |
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