题目内容
已知2x=9,2y=
,则x+2y的值=______.
| 8 |
| 3 |
∵知2x=9,2y=
,
∴x=log29,y=log2
,
x+2y=log29+2log2
=log29×(
)2=log264=6,
故答案为6;
| 8 |
| 3 |
∴x=log29,y=log2
| 8 |
| 3 |
x+2y=log29+2log2
| 8 |
| 3 |
| 8 |
| 3 |
故答案为6;
练习册系列答案
相关题目
题目内容
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |