1-x |
x |
A.{x|x≤1} | B.{x|x≥1} | C.{x|x≥1或x≤0} | D.{x|0≤x≤1} |
1-x |
x |
x-2 |
1 |
x-3 |
A.[2,3) | B.(3,+∞) | C.[2,3)∪(3,+∞) | D.(2,3)∪(3,+∞) |
1+x |
2+x |
A.(-∞,1) | B.(1,+∞) | C.(
| D.(0,
|
| |||
|
1-2x |
m |
n |
3 |
m |
n |
16-x2 |
A.[-4,4] | B.[-4,2) | C.(2,4] | D.(2,+∞) |
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