x2 |
a2 |
y2 |
b2 |
PF1 |
PF2 |
4 |
3 |
4 |
3 |
| ||
|
|
| ||
|
|
F1F2 |
PQ |
AB |
a2-b2 |
PF1 |
PF2 |
PF1 |
PF2 |
x | 20 |
y | 20 |
x | 20 |
y | 20 |
x | 20 |
y | 20 |
PF1 |
PF2 |
PF1 |
PF2 |
4 |
3 |
PF1 |
PF2 |
4 |
3 |
|
|
x2 |
4 |
3y2 |
4 |
| ||
|
|
| ||
|
|
F1F2 |
| ||
|
|
| ||
|
|
|
|
|
3k2-6k-1 |
1+3k2 |
3k2+6k-1 |
1+3k2 |
yP-yQ |
xP-xQ |
k(xP+xQ)-2k |
xP-xQ |
k
| ||
|
1 |
3 |
-1-0 |
-1-2 |
1 |
3 |
PQ |
AB |
2 |
2 |
AM |
AN |
x2 |
a2 |
y2 |
b2 |
QM |
QN |
1 |
2 |
3 |
2 |
PA |
PB |
PM |