题目内容
计算:
(1)(2
)0+2-2×(
)-1-100
(2)lg2+lg5+log2.56.25+lg
+ln
.
(1)(2
3 |
5 |
1 |
4 |
1 |
2 |
(2)lg2+lg5+log2.56.25+lg
1 |
100 |
e |
(1)(2
)0+2-2×(
)-1-100
=1+
×4-
=2-10=-8.
(2)lg2+lg5+log2.56.25+lg
+ln
=lg10+
+lg10-2+lne
=1+2-2+
=
.
3 |
5 |
1 |
4 |
1 |
2 |
1 |
22 |
100 |
(2)lg2+lg5+log2.56.25+lg
1 |
100 |
e |
lg(2.5)2 |
lg2.5 |
1 |
2 |
1 |
2 |
3 |
2 |
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