x2+(1-a2)x-a |
x |
A.0 | B.1 | C.-1 | D.±1 |
x2+(1-a2)x-a |
x |
a |
x |
x2+(1-a2)x-a |
x |
a |
x |
a |
x |
1 |
x |
1 |
x2 |
1 |
x |
1 |
x2 |
|
A.6 | B.7 | C.8 | D.0 |
x f′(x)-f(x) |
x2 |
A.(-1,0) | B.(-1,0)∪(1,+∞) | C.(1,+∞) | D.(-∞,-1)∪(1,+∞) |
A.a>c>b | B.c>b>a | C.c>a>b | D.a>b>c |
2x+1 |
x+2 |
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