1+f(x-2) |
1-f(x-2) |
3 |
A.
| B.
| C.2-
| D.-2-
|
1+f(x-2) |
1-f(x-2) |
1+f(x-4) |
1-f(x-4) |
1 |
f(x-4) |
1 |
f(x-8) |
1+f(3) |
1-f(3) |
3 |
1+f(5) |
1-f(5) |
3 |
|
A.8 | B.
| C.-8 | D.-
|
x+a-1 |
x+2 |
f1(x)+f2(x) |
2 |
|f1(x)-f2(x)| |
2 |
1 |
2 |
A.(-1,+∞) | B.(-∞,-1) |
C.(-∞,-1)∪(-1,0) | D.(-∞,-1)∪(-1,+∞) |
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