λ |
1+λ |
1 |
1+λ |
A.(-∞,-1) | B.(-∞,-1)∪(-1,0) | C.(-1,0) | D.(-∞,-1)∪(1,+∞) |
λ |
1+λ |
1 |
1+λ |
λ |
1+λ |
1 |
1+λ |
λ-1 |
λ+1 |
1 |
2 |
1 |
2 |
x+1 |
2 |
1 |
2 |
A.a>b>c | B.c>a>b | C.b>a>c | D.c>b>a |
A.(-∞,-1)∪(2,+∞) | B.(-1,2) | C.(-2,1) | D.(-∞,-2)∪(1,+∞) |
1 |
2 |
x2+2x-3 |
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