题目内容
求下列各式的值:
(1)log2.56.25+lg
+ln(e
)+log2(log216)(2)
lg
-
lg
+lg
.
(1)log2.56.25+lg
| 1 |
| 100 |
| e |
| 1 |
| 2 |
| 32 |
| 49 |
| 4 |
| 3 |
| 8 |
| 245 |
(1)log2.56.25+lg
+ln(e
)+log2(log216)
=2-2+
+log24
=
.
(2)
lg
-
lg
+lg
=lg
-lg4+lg
=lg(
×
÷4)
=lg
=
.
| 1 |
| 100 |
| e |
=2-2+
| 3 |
| 2 |
=
| 7 |
| 2 |
(2)
| 1 |
| 2 |
| 32 |
| 49 |
| 4 |
| 3 |
| 8 |
| 245 |
=lg
| ||
| 7 |
| 245 |
=lg(
| ||
| 7 |
| 245 |
=lg
| 10 |
=
| 1 |
| 2 |
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