a |
b |
a |
a |
b |
3 |
2 |
a |
a |
b |
1 |
2 |
1+cos2x |
2 |
3 |
2 |
1 |
2 |
| ||
2 |
π |
4 |
3 |
2 |
π |
4 |
1 |
2 |
π |
8 |
3+
| ||
2 |
3 |
2 |
3 |
2 |
| ||
2 |
π |
4 |
3 |
2 |
π |
4 |
π |
4 |
π |
8 |
3π |
8 |
π |
8 |
3π |
8 |
a |
b |
a |
b |
a |
b |
a |
b |
e1 |
e2 |
AB |
e1 |
e2 |
BC |
e1 |
e2 |
CD |
e1 |
e2 |
3 |
a |
A.-
| B.
| C.-
| D.
|
v1 |
v2 |
a |
b |
a |
b |
OA |
OB |
OP |
AB |
OP |
PM |
PN |
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