1 |
x-5 |
1 |
x-5 |
|
|
|x|+2 |
x+2 |
x-2 |
x+2 |
A.①② | B.②③ | C.③① | D.④① |
log
|
A.
| B.
| C.(
| D.{x∈R|
|
1 |
x+1 |
A.{x|x≠-1} | B.{x|x≠-2} |
C.{x|x≠-1且x≠-2} | D.{x|x≠-1或x≠-2} |
ax |
1+ax |
1 |
2 |
1 |
2 |
A.{-1,0} | B.{0} | C.{-1} | D.{-1,0,1} |
x+1 |
2 |
x |
2 |
A.{0,1} | B.[0,1] | C.{0,1,2} | D.[0,2] |
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