x2 |
17-k |
y2 |
8-k |
x2 |
8 |
y2 |
17 |
A.焦距相等 | B.准线相同 | C.焦点相同 | D.离心率相等 |
x2 |
8 |
y2 |
17 |
17-8 |
x2 |
17-k |
y2 |
8-k |
17-k-8+k |
x2 |
17-k |
y2 |
8-k |
x2 |
8 |
y2 |
17 |
x2 |
9 |
y2 |
16 |
A.(±5,0) | B.(0,±5) | C.(0,±
| D.(±
|
x2 |
5 |
y2 |
p2 |
3 |
2 |
A.(-1.0),(1,0) | B.(0,1),(0,-1) | C.(-
| D.(0,
|
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