题目内容
已知logx27=-
,则x的值为( )
| 3 |
| 4 |
| A.9 | B.81 | C.
| D.
|
∵logx27=-
,∴x -
=27,
∴x=27-
=33×(-
)=
=
.
故选D.
| 3 |
| 4 |
| 3 |
| 4 |
∴x=27-
| 4 |
| 3 |
| 4 |
| 3 |
| 1 |
| 34 |
| 1 |
| 81 |
故选D.
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题目内容
| 3 |
| 4 |
| A.9 | B.81 | C.
| D.
|
| 3 |
| 4 |
| 3 |
| 4 |
| 4 |
| 3 |
| 4 |
| 3 |
| 1 |
| 34 |
| 1 |
| 81 |