A.实轴长为8,虚轴长为6 | B.离心率为
| ||
C.渐近线方程为y=±
| D.焦点坐标为(±5,0) |
y2 |
16 |
x2 |
9 |
5 |
4 |
4 |
3 |
x2 |
2 |
A.
| B.
| C.
| D.
|
x2 |
4 |
A.(±
| B.(0,±
| C.(±
| D.(0,±
|
x2 |
2+m |
y2 |
m+1 |
A.(-∞,-2)∪(-1,+∞) | B.(-∞,-2) |
C.(-1,+∞) | D.(-2,-1) |
A.y=±
| B.y=±
| C.y=±
| D.y=±
|
x2 |
16 |
y2 |
b2 |
5 |
4 |
A.y=±
| B.y=±
| C.y=±
| D.y=±
|
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