x2 |
a2 |
y2 |
b2 |
| ||
2 |
PF1 |
F1F2 |
OA |
OB |
2 |
3 |
3 |
4 |
PF1 |
F1F2 |
1 |
a2 |
1 |
2b2 |
x2 |
2 |
|m| | ||
|
|
4km |
1+2k2 |
2m2-2 |
1+2k2 |
m2-2k2 |
1+2k2 |
1-k2 |
1+2k2 |
OA |
OB |
1+k2 |
1+2k2 |
2 |
3 |
1+k2 |
1+2k2 |
3 |
4 |
1 |
2 |
1+k2 |
(x1+x2)2-4x1x2 |
|
1 |
2 |
3 |
4 |
|
|
3 |
4 |
| ||
2 |
4 |
3 |
x2 |
6 |
y2 |
2 |
x2 |
3 |
π |
4 |
x2 |
a2 |
y2 |
b2 |
2 |
3 |
2
| ||
3 |
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