题目内容
已知a2=
(a>0),则log
a=______.
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因为a2=
(a>0),所以a=
,
所以log
a=log
=-log3(
)2=-2(log32-1)=2-2log32.
故答案为:2-2log32.
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所以log
| 1 |
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故答案为:2-2log32.
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