1-x |
A.{x|0<x<1} | B.{x|0<x≤1} | C.{x|0≤x≤1} | D.{x|x>0} |
1-x |
|
x-4 |
15-3x |
A.[1,2] | B.[0,2] | C.[-
| D.[-
|
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} |
© 2017-2019 超级试练试题库,All Rights Reserved.