x2 |
a2 |
y2 |
b2 |
AF1 |
F1B |
AF2 |
F2C |
|AF1| |
sinβ |
|AF1| |
sinα |
|F1F2| |
sin(α+β) |
sinβ|F1F2| |
sin(α+β) |
sinα|F1F2| |
sin(α+β) |
sinβ|F1F2| |
sin(α+β) |
sinα|F1F2| |
sin(α+β) |
sinβ |
sin(α+β) |
sinα |
sin(α+β) |
sinα+sinβ |
sin(α+β) |
sin(α+β) |
sinα+sinβ |
a2 +c2 |
a2-c2 |
2(1+e2) |
1-e2 |
2(1+e2) |
1-e2 |
y0 |
x0-c |
|
c2b2y02-a2b2y02 |
b2(x0-c)2+a2y02 |
c2b2y0-a2 b2y0 |
b2(x0-c)2+a2y02 |
|AF2| |
|F2C| |
y0 |
y2 |
b2(x0-c)2+a2y02 |
c2b2-a2b2 |
|AF1| |
|F1C| |
y0 |
y1 |
b2(x0-c)2+a2y02 |
c2b2-a2b2 |
b2(x0+c)2+a2y02 |
c2b2-a2b2 |
2(1+e2) |
1-e2 |
x2 |
4 |
y2 |
3 |
AF2 |
F2B |
2 |
3 |
4 |
3 |
x2 |
a2 |
y2 |
b2 |
x2 |
m |
y 2 |
n |
x2 |
a |
y 2 |
b |
A.m-a | B.
| C.m2-a2 | D.
|
A.椭圆 | B.双曲线 | C.拋物线 | D.圆 |
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