1-x |
x-4 |
A.(1,4) | B.[1,4) | C.(-∞,1)∪(4,+∞) | D.(-∞,1]∪(4,+∞) |
1-x |
x-4 |
1 |
x |
-x2-3x+4 |
A.{x|-1<x<4} | B.{x|-4<x<1且x≠0} |
C.{x|-4≤x≤3且x≠0} | D.{x|-1<x<4} |
log2x-2 |
A.[3,+∞) | B.[4,+∞) | C.(3,+∞) | D.(4,+∞) |
log2(2x-1) |
x-1 |
A.{x|x>
| B.{x|x≠1} | ||||
C.{x|
| D.{x|x>
|
A.a>b>c | B.b>c>a | C.b>a>c | D.a>c>b |
1 | ||
log
|
A.(-
| B.(-
| C.(-
| D.(0,+∞) |
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