A.(4,0) | B.(2,0) | C.(1,0) | D.(
|
p |
2 |
y2 |
16 |
x2 |
9 |
A.x=3 | B.y=-4 | C.x=3或y=-4 | D.x=4或y=-3 |
x2 |
9 |
y2 |
16 |
A.22 | B.16 | C.14 | D.12 |
x2 |
4+k2 |
y2 |
5-k2 |
A.(0,±3) | B.(±3,0) | C.(±1,0) | D.(0,±1) |
x2 |
a2 |
y2 |
b2 |
AF1 |
AF2 |
AF1 |
AF2 |
A.
| B.
| C.
| D.
|
x2 |
9 |
y2 |
a |
13 |
A.y=±
| B.y=±
| C.y=±
| D.y=±
|
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