问题
解答题
(1)解不等式log
(2)求值:log24-(
|
答案
(1)由不等式log
(3x-1)>1 4
=log1 2 1 4
可得,0<3x-1<1 2
,1 2
解得
<x<1 3
,故不等式的解集为{x|1 2
<x<1 3
}.1 2
(2)log24-(
-5
)0-82
+lg1=log222- 1 - 2 + 0=2-1-2+0=-1.1 3
(1)解不等式log
(2)求值:log24-(
|
(1)由不等式log
(3x-1)>1 4
=log1 2 1 4
可得,0<3x-1<1 2
,1 2
解得
<x<1 3
,故不等式的解集为{x|1 2
<x<1 3
}.1 2
(2)log24-(
-5
)0-82
+lg1=log222- 1 - 2 + 0=2-1-2+0=-1.1 3