问题
解答题
(1)解不等式 22x-1>(
(2)计算:log89•log2732. |
答案
(1)由等式 22x-1>(
1 |
2 |
22x-1>22-x,则2x-1>2-x,解得x>1.
所以原不等式的解集为(1,+∞).
(2)log89•log2732
=log2332•log3325
=
2 |
3 |
5 |
3 |
=
2 |
3 |
5 |
3 |
10 |
9 |
(1)解不等式 22x-1>(
(2)计算:log89•log2732. |
(1)由等式 22x-1>(
1 |
2 |
22x-1>22-x,则2x-1>2-x,解得x>1.
所以原不等式的解集为(1,+∞).
(2)log89•log2732
=log2332•log3325
=
2 |
3 |
5 |
3 |
=
2 |
3 |
5 |
3 |
10 |
9 |