2 |
π |
4 |
π |
3 |
2tanα |
1-tan2α |
2(
| ||
1-(
|
π |
4 |
π |
4 |
π |
4 |
| ||
2 |
| ||
2 |
2sinα•cosα+(cos2α-sin2α ) |
sin2α+cos2α |
| ||
2 |
2tanα+(1-tan2α) |
1+tan2α |
π |
4 |
π |
3 |
BC•sin
| ||
sin
|
2×
| ||||
|
6 |
| ||||
4 |
1 |
2 |
1 |
2 |
6 |
| ||||
4 |
3+
| ||
2 |
2(1-2n) |
1-2 |
2 |
n |
an |
n |
1 |
T1 |
1 |
T2 |
1 |
T3 |
1 |
Tn |
2 |
nan |
1 |
3 |
1 |
an |
1 |
nbn |
3 |
4 |
1 |
n+2 |
f(1) |
g(1) |
f(-1) |
g(-1) |
5 |
2 |
f(n) |
g(n) |
15 |
16 |
A.
| B.
| C.
| D.
|
A.91 | B.152 | C.218 | D.279 |
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