y2 |
16 |
x2 |
9 |
4 |
5 |
A.(1,
| B.(1,-
| C.(
| D.(-
|
y2 |
16 |
x2 |
9 |
5 |
4 |
|PF| |
|PB| |
5 |
4 |
4 |
5 |
4 |
5 |
y2 |
16 |
x2 |
9 |
y2 |
16 |
1 |
9 |
4
| ||
3 |
4
| ||
3 |
x2 |
a2 |
3 |
2 |
A.
| B.
| C.
| D.
|
x2 |
a2 |
y2 |
b2 |
a |
2 |
x2 |
a2 |
y2 |
b2 |
x2 |
m2+12 |
y2 |
4-m2 |
A.4 | B.2
| C.8 | D.与m有关 |
1 |
3 |
y2 |
4 |
x2 |
3 |
A.y=±
| B.y=±
| C.y=±
| D.y=±
|
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