10 |
x |
A.[1,2] | B.(1,2) | C.{-1,1,2} | D.{-2,-1,1,2} |
10 |
x |
10 |
x |
10 |
x |
10 |
x |
10 |
x |
10 |
x |
10 |
x |
10 |
3 |
10 |
x |
5 |
2 |
A.(0,0) | B.x=0∪y=0 | C.0 | D.{(0,0)} |
A.(1,+∞) | B.[1,+∞) | C.(-∞,1) | D.(-∞,1] |
A.0 | B.1 | C.2 | D.3 |
A.{x|1≤x<2} | B.{x|x>2} | C.{x|x>1} | D.{x|1<x<2} |
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