x2 |
a2 |
y2 |
b2 |
x2 |
a2 |
y2 |
b2 |
PA |
AF |
PB |
BF |
b |
a |
| ||
3 |
x2 |
12 |
y2 |
4 |
b |
a |
b |
a |
a |
b |
|
|
a2 |
c |
ab |
c |
|
c2-a2 |
2 |
PA |
AF |
a2 |
c |
cx1-a2 |
c(c-x1)) |
PA |
BF |
cx1-a2 |
c(c-x2) |
cx1-a2 |
c(c-x1)) |
cx2-a2 |
c(c-x2)) |
(cx1-a2)(c-x2)+(cx2-a2)(c-x1) |
c(c-x1))(c-x2)) |
(c2+a2 )c-c(c2-a2)-2ca2 |
c(c-x1))(c-x2) |
b |
a |
b |
a |
a |
b |
|
|
| ||
|
|
| ||
e|
|
| ||
|
|
| ||
e|
|
|
| ||
|
|
|
| ||
|
|
|
| ||
|
|
|
| ||
|
|
x2 |
4 |
x2 |
a2 |
y2 |
b2 |
5 |
3 |
MN |
MF1 |
MF2 |
OA |
OB |
x⊕a |
14 |
5 |
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