问题
解答题
求下列各式的值: (1)log2.56.25+lg
|
答案
(1)log2.56.25+lg
+ln(e1 100
)+log2(log216)e
=2-2+
+log243 2
=
.7 2
(2)
lg1 2
-32 49
lg4 3
+lg8 245
=lg
-lg4+lg32 7 245
=lg(
×32 7
÷4)245
=lg10
=
.1 2
求下列各式的值: (1)log2.56.25+lg
|
(1)log2.56.25+lg
+ln(e1 100
)+log2(log216)e
=2-2+
+log243 2
=
.7 2
(2)
lg1 2
-32 49
lg4 3
+lg8 245
=lg
-lg4+lg32 7 245
=lg(
×32 7
÷4)245
=lg10
=
.1 2