π |
4 |
2sinαcosα-cos2α |
sin2α+1 |
π |
4 |
1-tanα |
1+tanα |
2sinαcosα-cos2α |
sin2α+1 |
2sinαcosα-cos2α |
2sin2α+cos2α |
| ||
|
2tanα-1 |
2tan2α+1 |
7 |
19 |
a |
3x |
2 |
3x |
2 |
b |
x |
2 |
x |
2 |
a |
b |
| ||
5 |
1 |
3 |
log |
|
π |
2 |
π |
2 |
A.
| B.-
| C.±
| D.以上都不对 |
1 |
5 |
A.±
| B.
| C.-
| D.±
|
1 |
4 |
π |
2 |
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