x-3 |
x+a |
A.a>-3 | B.-3<a<2 | C.a>2或a<-3 | D.a≥2或a<-3 |
x-3 |
x+a |
x-3 |
x+a |
x-3 |
x+a |
x-3 |
x+a |
-5 |
-2+a |
x-3 |
x+a |
-5 |
-2+a |
2 |
A.a∈A | B.a∉A | C.{a}∈A | D.a⊆A |
1 |
3 |
1 |
2 |
1 |
x |
A.3 | B.7 | C.15 | D.31 |
A.1 | B.2 | C.4 | D.8 |
1 |
x |
1 |
3 |
1 |
2 |
A.3 | B.7 | C.15 | D.31 |
A.3 | B.4 | C.5 | D.6 |
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