log2
|
1 |
sinx |
1 |
sinx |
1 |
sinx |
1 |
2 |
π |
6 |
5π |
6 |
π |
6 |
5π |
6 |
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] |
1 |
2 |
3 |
2 |
x |
a |
lg(2-x) |
A.(-∞,+∞) | B.(-∞,2) | C.(-∞,0] | D.(-∞,1] |
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