1 |
2 |
3 |
2 |
x |
a |
x |
a |
1 |
2 |
3 |
2 |
|
|
1 |
2a |
3 |
2a |
a |
2 |
3a |
2 |
1 |
2a |
3 |
2a |
a |
2 |
3a |
2 |
lg(2-x) |
A.(-∞,+∞) | B.(-∞,2) | C.(-∞,0] | D.(-∞,1] |
| ||
|x-2| |
A.[
| B.[
| C.[
| D.(2,+∞) |
sinx | ||
|
A.[-
| B.[-
| C.[-
| D.[-
|
3-x |
1+2x |
A.[
| B.{y|y≠-
| C.(-∞,3] | D.[
|
ln(-x2+x-2) |
x |
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