x2 |
a2 |
y2 |
b2 |
a2 |
c |
n |
m |
EF2 |
EF1 |
F2B |
F1A |
1 |
2 |
| ||
|
1 |
2 |
c |
a |
√3 |
3 |
a2 |
c |
{ | y=k(x-3c) 2x2+3y2=6c2 |
√3 |
3 |
√3 |
3 |
18k2c |
2+3k2 |
27k2c2-6c2 |
2+3k2 |
9k2c-2c |
2+3k2 |
9k2c+2c |
2+3k2 |
√2 |
3 |
3c |
2 |
√2 |
3 |
√2 |
2 |
√2 |
2 |
c |
2 |
c |
2 |
c |
2 |
c |
2 |
{ | (m-
n= √2 (m-c) |
{ | m=
n=
|
n |
m |
2 √2 |
5 |
√2 |
3 |
n |
m |
2 √2 |
5 |
3c |
2 |
√2 |
3 |
5 |
3 |
2 √2 |
3 |
n |
m |
2 √2 |
5 |
√2 |
3 |
n |
m |
2 √2 |
5 |