题目内容
计算下列各式:
(1)
+(
)-
+(0.1)-1-π0
(2)lg
-lg
+lg12.5-log89•log278.
(1)
|
| 27 |
| 64 |
| 1 |
| 3 |
(2)lg
| 1 |
| 2 |
| 5 |
| 8 |
(1)
+(
)-
+(0.1)-1-π0=
+[(
) 3] -
+10-1=
+
+9=12
(2)lg
-lg
+lg12.5-log89•log278=lg
+lg12.5-
log23•log32
=lg10-
•log32=1-
=
|
| 27 |
| 64 |
| 1 |
| 3 |
| 5 |
| 3 |
| 3 |
| 4 |
| 1 |
| 3 |
| 5 |
| 3 |
| 4 |
| 3 |
(2)lg
| 1 |
| 2 |
| 5 |
| 8 |
| 4 |
| 5 |
| 2 |
| 3 |
=lg10-
| 2 |
| 3 |
| 1 |
| log32 |
| 2 |
| 3 |
| 1 |
| 3 |
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