题目内容
计算(写出运算过程)
(1)log363-2log3
;
(2)64
-(-
)0;
(3)0.50+log28-log33+lg1;
(4)
•
÷a6.
(1)log363-2log3
| 7 |
(2)64
| 1 |
| 3 |
| 2 |
| 3 |
(3)0.50+log28-log33+lg1;
(4)
| 3 | a5 |
| 3 | a7 |
(1)原式=log363-log37=log3
=log39=2;
(2)原式=(43)
-1=4-1=3;
(3)原式=1+log223-1+0=1+3-1=3;
(4)原式=a
+
-6=a-2=
.
| 63 |
| 7 |
(2)原式=(43)
| 1 |
| 3 |
(3)原式=1+log223-1+0=1+3-1=3;
(4)原式=a
| 5 |
| 3 |
| 7 |
| 3 |
| 1 |
| a2 |
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