x2 |
a2 |
y2 |
b2 |
1 |
2 |
c |
a |
1 |
2 |
3 |
x2 |
4 |
y2 |
3 |
x2 |
4 |
y2 |
3 |
8k(y0-kx0) |
3+4k2 |
3x0 |
4y0 |
3x0 |
4y0 |
4y20+3x20 |
4y0 |
x02 |
4 |
y02 |
3 |
3 |
y0 |
4y0 |
3x0 |
y0 |
3 |
3 |
y0 |
y0 |
3 |
y0 |
3 |
3 |
y0 |
x2 |
25 |
y2 |
16 |
PA |
PF |
1 |
4 |
PA |
AF |
x2 |
4 |
x2 |
6 |
y2 |
2 |
2
| ||
3 |
OA |
OB |
4 |
3 |
| ||
2 |
a |
b |
x2 |
a2 |
y2 |
b2 |
| ||
2 |
3 |
1 |
2 |
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