题目内容
设3a=4b=36，则
+
=______．
| 2 |
| a |
| 1 |
| b |
∵3a=4b=36，∴a=
，b=
，∴
+
=
+
=
=1．
故答案为1．
| lg36 |
| lg3 |
| lg36 |
| lg4 |
| 2 |
| a |
| 1 |
| b |
| 2lg3 |
| lg36 |
| lg4 |
| lg36 |
| lg(32×4) |
| lg36 |
故答案为1．
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