x2 |
a2 |
y2 |
b2 |
tan
| ||
tan
|
A.
| B.
| C.
| D.
|
|PF2| |
sinα |
|PF1| |
sinβ |
|F2F1| |
sin[180°-(α+β)] |
|F2F1| |
sin[180°-(α+β)] |
|PF2|-|PF1| |
sinβ-sinα |
2c |
sin(α+β) |
2a |
sinβ-sinα |
c |
a |
sin(α+β) |
sinβ-sinα |
2sin
| ||||
2cos
|
sin
| ||
sin
|
sin
| ||||||||
sin
|
tan
| ||||
tan
|
α |
2 |
e-1 |
e+1 |
β |
2 |
tan
| ||
tan
|
e-1 |
e+1 |
x2 |
9 |
y2 |
m |
x2 |
a2 |
y2 |
b2 |
y2 |
a2 |
x2 |
b2 |
1 |
5 |
A.
| B.
| C.
| D.
|
1 |
n |
x2 |
a2 |
y2 |
b2 |
y2 |
3 |
x2 |
4 |
A.y=±
| B.y=±
| C.y=±
| D.y=±
|
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