1 |
n+a1 |
1 |
n+a2 |
1 |
n+a3 |
1 |
n+an |
1 |
n+1 |
1 |
n+2 |
1 |
2n |
1 |
n+2 |
1 |
n+3 |
1 |
n+4 |
1 |
2n+1 |
1 |
2n+2 |
1 |
2n+1 |
1 |
2n+2 |
1 |
n+1 |
1 |
2n+2 |
1 |
2n+2 |
1 |
n+1 |
7 |
12 |
a2 |
4 |
A.a≥2 | B.a<0 | C.0≤a≤4 | D.a<0或a≥4 |
A.-2010 | B.2010 | C.-2011 | D.2011 |
|
A.-sin3x | B.-cos3x | C.cos3x | D.sin3x |
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