x2 |
a2 |
y2 |
b2 |
A.2 | B.
| C.
| D.
|
p |
2 |
p |
2 |
b |
a |
p |
2 |
pb |
2a |
pb |
2a |
p |
2 |
p |
2 |
b |
2a |
c |
a |
| ||
a |
| ||
a |
5 |
x2 |
4 |
y2 |
5 |
PF1 |
PF2 |
A.24 | B.48 | C.50 | D.56 |
3 |
A.x2-
| B.
| C.
| D.
|
x2 |
a2 |
y2 |
b2 |
1 |
2 |
x2 |
2 |
y2 |
b2 |
3 |
PF1 |
PF2 |
A.30° | B.60° | C.90° | D.120° |
A.
| B.
| C.3
| D.6
|
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