题目内容
(1)求不等式:2 1-2x>
的解集
(2)计算:(log43+log83)(log32+log92)-log
.
1 |
8 |
(2)计算:(log43+log83)(log32+log92)-log
1 |
2 |
4 | 32 |
解(1)由:2 1-2x>
=2-3可得1-2x>-3
∴x<2
故原不等式的解集为{x|x<2}
(2)原式=(log223+log233)(log32+log322)-log2-12
=(
+
)log23•(1+
)log32+
=
×
+
=
1 |
8 |
∴x<2
故原不等式的解集为{x|x<2}
(2)原式=(log223+log233)(log32+log322)-log2-12
5 |
4 |
=(
1 |
2 |
1 |
3 |
1 |
2 |
5 |
4 |
=
5 |
6 |
3 |
2 |
5 |
4 |
5 |
2 |
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