x2 |
a2 |
y2 |
b2 |
| ||
2 |
AP |
BP |
1 |
2 |
1 |
a2 |
1 |
2b2 |
x2 |
2 |
2 |
2 |
F1P |
F2P |
F1P |
F2P |
F1P |
F2P |
AP |
BP |
2 |
2 |
2 |
2 |
AP |
BP |
|
1 |
2 |
-8k2 |
2k2+1 |
8k2-2 |
2k2+1 |
1 |
2 |
FM |
FN |
8k2-2 |
2k2+1 |
-8k2 |
2k2+1 |
1 |
2 |
3 |
| ||
4 |
| ||
2 |
1 |
2 |
F′F |
FP |
F′F |
F′P |
AB |
CD |
x2 |
a2 |
y2 |
b2 |
| ||
2 |
| ||
2 |
m |
n |
A.
| B.
| C.
| D.
|
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