x-4 |
15-3x |
A.[1,2] | B.[0,2] | C.[-
| D.[-
|
|
x-4 |
15-3x |
x-4 |
15-3x |
3 |
x-4 |
15-3x |
3 |
x-4 |
15-3x |
1 | ||
2
|
3 | ||
2
|
3 |
x-4 |
15-3x |
3 |
2+cosx |
2-cosx |
log2
|
3 |
2 |
n | an |
1 |
2 |
7 |
3 |
1 |
27 |
A.①② | B.②③ | C.③④ | D.②④ |
(x+1)0 | ||
|
A.{x|x<0} | B.{x|x>0} |
C.{x|x<0且x≠-1} | D.{x|x≠0且x≠-1,x∈R} |
A.[0,1] | B.[-3,3] | C.[0,3] | D.[-1,1] |
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