3 |
AB |
AC |
3 |
3 |
3 |
π |
6 |
π |
2 |
π |
6 |
π |
2 |
π |
3 |
π |
6 |
π |
6 |
2π |
3 |
π |
6 |
AB |
AC |
3 |
1 |
2 |
1 |
2 |
b2+c2-
|
(2-
|
3 |
| ||
2 |
A.y=cosx | B.y=sin2x | C.y=tanx | D.y=sin(2x+
|
a |
b |
π |
2 |
a |
b |
a |
b |
π |
4 |
π |
6 |
π |
3 |
A.函数f(x+1)一定是偶函数 | B.函数f(x-1)一定是偶函数 |
C.函数f(x+1)一定是奇函数 | D.函数f(x-1)一定是奇函数 |
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