x+1 |
x-1 |
1-2x |
1 |
4 |
1 |
2 |
x+1 |
x-1 |
2 |
x-1 |
2 |
x-1 |
1-2x |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1-2x |
1 |
2 |
A.(-1,0) | B.[-1,1] | C.(0,1) | D.[0,1] |
2x-3 |
2x+3 |
A.(-∞,-1)∪(-1,+∞) | B.(-∞,1)∪(1,+∞) |
C.(-∞,0)∪(0,+∞) | D.(-∞,0)∪(1,+∞) |
1-x2 |
x2-1 |
A.{x|-1≤x≤1} | B.{x|x≤-1或x≥1} | C.{x|0≤x≤1} | D.{-1,1} |
|
1 |
2 |
1 |
ax+1 |
a |
f(x) |
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