x2 |
a2 |
y2 |
b2 |
1 |
2 |
6 |
x2 |
a2 |
y2 |
b2 |
1 |
2 |
a2-b2 |
a2 |
1 |
4 |
4 |
3 |
6 |
3 |
x2 |
4 |
y2 |
3 |
32k2 |
4k2+3 |
64k2-12 |
4k2+3 |
y2+y1 |
x2-x1 |
y2(x2-x1) |
y2+y1 |
2x1x2-4(x1+x2) |
x1+x2 |
2×
| ||||
|
x2 |
a2 |
y2 |
b2 |
1 |
2 |
AF1 |
AF2 |
F1A |
AF2 |
F1A |
AB |
n |
2 |
x2 |
a2 |
y2 |
b2 |
1 |
2 |
x2 |
a2 |
y2 |
b2 |
| ||
3 |
OA |
OB |
x2 |
a2 |
y2 |
b2 |
2 |
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