题目内容
(1)解不等式:log
(x+1)>log
(x-3)
(2)求值:(
×
)6+(
)
-4•(
)-
-
×80.25-(-2005)0.
| 3 |
| 4 |
| 4 |
| 3 |
(2)求值:(
| 3 | 2 |
| 3 |
2
|
| 4 |
| 3 |
| 16 |
| 49 |
| 1 |
| 2 |
| 4 | 2 |
(1)∵log
(x+1)>log
(x-3),∴log
(x+1)>log
.
故有
?
?
∴3<x<1+
,
故不等式的解集为{x|3<x<1+
}.
(2)原式=22×33+8
-4×
-2
•8
-1=4×27+2-7-21-1=100.
| 3 |
| 4 |
| 4 |
| 3 |
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| x-3 |
故有
|
|
|
∴3<x<1+
| 5 |
故不等式的解集为{x|3<x<1+
| 5 |
(2)原式=22×33+8
| 1 |
| 3 |
| 7 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
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