x |
1+|x| |
x |
1+n|x| |
A.0个 | B.1个 | C.2个 | D.3个 |
x |
1+x |
x |
1-x |
f1(x) |
1+[f1(x)] |
x |
1+2[x] |
x |
1+n[x] |
A.y=
| B.y=-2x2 | C.y=3x+1 | D.y=(x-1)2 |
A.[3,5] | B.[1,5] | C.[0,3] | D.[0,0.5] |
5x+2 |
2x-3 |
1 |
4 |
1 |
2 |
ex-1 |
ex+1 |
A.{y|y≠1且y∈R} | B.[0,1] | C.[-1,1] | D.(-1,1) |
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