|
A.(3,+∞) | B.[3,+∞) | C.(-2,5] | D.[3,5] |
|
|
|
|
2-x |
x+4 |
A.(-4,2] | B.[-4,2] | C.(-∞,-4]∪[2,+∞) | D.(-∞,-4)∪[2,+∞) |
ax-1 |
x-2 |
|
A.f(a)-
| B.f(x)-f(a)≥0 | C.f(a)-
| D.f(a)-f(x)≥0 |
x-5 |
2-x |
A.{x|x>5或x<2} | B.{x|2<x<5} | C.{x|x>5或x<-2} | D.{x|-2<x<5} |
x |
f(x) |
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