问题
解答题
计算 (1)
(2)log318-log32-log29•log34+2log23. |
答案
(1)原式=|2-e|-
+[(3 e
-9 2 3 2
)2]-5 3
-1 2 3 5
=e-2-
+(3 e3
)-1-5 3 3 5
=e-2-e+
-3 5 3 5
=-2.
(2)原式=log3
-18 2
×2lg3 lg2
+32lg2 lg3
=log332-4+3
=2-4+3
=1.