ax+b |
x-2 |
A.(1,2) | B.(-1,2) | C.(-∞,-1)∪(2,+∞) | D.(-∞,1)∪(2,+∞) |
b |
a |
ax+b |
x-2 |
x+
| ||
x-2 |
b |
a |
A.x2<a2<0 | B.x2>ax>a2 | C.x2<ax<0 | D.xx2>a2>ax |
3 |
2 |
5 |
2 |
1 |
2 |
A.P<Q<R | B.Q<R<P | C.Q<P<R | D.R<Q<P |
A.充分不必要条件 |
B.必要不充分条件 |
C.充要条件 |
D.既非充分条件也非必要条件 |
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