A.[3+2
| B.(-∞,3+2
| C.[3-2
| D.(-∞,3-2
|
x-1 |
x2+x |
x-1 |
x2+x |
1 | ||
|
1 | ||
x+
|
1 | ||
x-1+
|
2 |
x-1 |
2 |
2 |
1 | ||
x-1+
|
1 | ||
3+2
|
2 |
2 |
π |
2 |
π |
2 |
π |
2 |
A.c<b<a | B.b<c<a | C.c<a<b | D.a<c<b |
A.(0,
| B.(0,
| C.(0,
| D.(0,
|
1 |
2 |
1 |
3 |
a |
6 |
2 |
1-x |
A.(-1,0) | B.(0,1) | C.(-∞,0) | D.(-∞,0)∪(1,+∞) |
A.f(x)=x3-x | B.f(x)=-x3-x | C.f(x)=-x3+x | D.f(x)=x3+x |
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