1 |
2 |
A.[0,1] | B.{1} | C.[1,+∞) | D.[-1,+∞) |
1 |
2 |
A.{x|-2≤x≤4} | B.{x|3<x≤4} | C.{x|-2≤x≤-1} | D.{x|-1≤x≤3} |
2x-1 |
x+2 |
1 |
2 |
A.0 | B.±
| C.1,0,±
| D.0,±
|
A.{x|0<x<2} | B.{x|x>0} | C.{x|x>2} | D.{x|-1<x<0} |
A.[-1,3] | B.[-1,4) | C.(1,3] | D.(1,4) |
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