|
t |
4 |
1 |
2t |
A.[-2,0)∪(0,l) | B.[-2,0)∪[l,+∞) | C.[-2,l] | D.(-∞,-2]∪(0,l] |
1 |
4 |
| ||
2 |
1 |
2 |
1 |
4 |
t |
4 |
1 |
2t |
t |
4 |
1 |
2t |
1 |
4 |
(t+2)(t-1) |
4t |
|
2 |
4
| ||
3 |
A.0 | B.1 | C.2 | D.4 |
f(x)-f(-x) |
x |
A.(-2,0)∪(0,2) | B.(-∞,-2)∪(0,2) | C.(-∞,-2)∪(2,+∞) | D.(-2,0)∪(2,+∞) |
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