题目内容
(1)
=______;
(2)log48=______;
(3)lg
+lg
+log31=______.
(
| ||||||||
|
(2)log48=______;
(3)lg
| 2 |
| 5 |
(1)原式=
=m
+
-
-
-
=m0=1;
(2)原式=
=
;
(3)原式=lg
+0=
lg10=
.
故答案分别为1;
;
.
m
| ||||||
m
|
| 5 |
| 6 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
(2)原式=
| lg23 |
| lg22 |
| 3 |
| 2 |
(3)原式=lg
| 2×5 |
| 1 |
| 2 |
| 1 |
| 2 |
故答案分别为1;
| 3 |
| 2 |
| 1 |
| 2 |
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