问题
解答题
求下列各式的值: (1)(2
(2)(log32+log92)•(log43+log83)+(log33
|
答案
(1)原式=1+
×1 4
-2 5
=-3 2
(6分)2 5
(2)原式=(
+lg2 lg3
)•(lg2 2lg3
+lg3 2lg2
)+lg3 3lg2
+1 4
-01 2
(12分)=
•3lg2 2lg3
+5lg3 6lg2 3 4 =
+5 4
=23 4