x2 |
a2 |
y2 |
b2 |
| ||
2 |
A.4 | B.8 | C.12 | D.16 |
x2 |
a2 |
y2 |
b2 |
x2 |
a2 |
y2 |
b2 |
| ||
2 |
x2 |
m |
y2 |
8 |
A.9 | B.16 | C.7 | D.9或7 |
x2 |
4 |
y2 |
3 |
A.
| B.
| C.
| D.
|
x2 |
a2 |
y2 |
b2 |
2 |
3 |
x2 |
8 |
y2 |
4 |
| |PF1|-|PF2| | |
|PF1| |
x2 |
a2 |
y2 |
b2 |
OA |
OB |
0 |
AF2 |
F1F2 |
| ||
2 |
A.y=
| B.y=-
| C.y=-
| D.y=
|
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