问题 解答题
计算:(1)(-3
3
8
)
2
3
+(0.01)-
1
2
-(
2
-1)-1+(
3
-
2
)0

(2)log2.56.25+lg0.01+ln
e
+21+log23
答案

解(1)原式=(

-27
8
)
2
3
+(10-2)-
1
2
-
1
2
-1
+1

=

9
4
+10-(
2
+1)+1(4分)

=

9
4
+10-
2
(6分)

=

49
4
-
2
(7分)

(2)原式=log2.52.52+lg10-2+lne

1
2
+2×2 log23

=2-2+

1
2
+2×3   (5分)

=

13
2
(7分)

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