题目内容
化简(log43+log83)(log32+log92)=( )
A.
| B.
| C.1 | D.2 |
(log43+log83)(log32+log92)
=(
log23+
log23)(log32+
log32)
=log2(3
?3
)×log3(2?2
)
=(
log23)×(
log32)
=
故选B.
=(
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2 |
=log2(3
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2 |
=(
| 5 |
| 6 |
| 3 |
| 2 |
=
| 5 |
| 4 |
故选B.
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