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