1 |
3 |
1 |
x2 |
3 |
x |
A.-
| B.
| C.
| D.
|
1 |
3 |
1 |
x2 |
3 |
x |
1 |
x2 |
3 |
x |
1 |
3 |
1 |
x2 |
3 |
x |
1 |
3 |
1 |
x2 |
1 |
x2 |
3 |
x |
1 |
x |
1 |
x2 |
3 |
x |
1 |
3 |
1 |
3 |
23 |
3 |
23 |
3 |
x2+5 | ||
|
4 |
sinx |
2 |
x2+1 |
x |
A.[2,+∞) | B.(-∞,-2] | C.(-∞,-2]∪[2,+∞) | D.[-2,2] |
1 |
a |
1 |
b |
1 |
c |
A.[0,
| B.[
| C.[1,8) | D.[8,+∞) |
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