题目内容
2log
10+log
0.25=（ ）
| 1 |
| 5 |
| 1 |
| 5 |
| A．0 | B．-1 | C．-2 | D．2 |
2log
10+log
0.25
=log
100+log
0.25=log
25
=-log525=-2．
故选C．
| 1 |
| 5 |
| 1 |
| 5 |
=log
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=-log525=-2．
故选C．
练习册系列答案
相关题目
题目内容
| 1 |
| 5 |
| 1 |
| 5 |
| A．0 | B．-1 | C．-2 | D．2 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |