x2+2x+2 |
x+1 |
A.(0,2) | B.不存在 | C.(1,2) | D.(1,-2) |
x2+2x+2 |
x+1 |
(x+1)2+1 |
x+1 |
1 |
x+1 |
x2+2x+2 |
x+1 |
A.F(-
| B.F(-
| ||||
C.F(-
| D.F(-
|
(-1)n |
n |
m |
1 |
a |
1 |
2a |
1 |
2 |
m |
2 |
x-3 |
x+1 |
A.在(-2,+∞)内单调递增 | B.在(-2,+∞)内单调递减 |
C.在(-1,+∞)内单调递增 | D.在(-1,+∞)内单调递减 |
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