3 |
A.
| B.
| C.
| D.
|
x2 | ||
|
y2 | ||
|
1 |
2 |
a2+b2 |
| ||
1 |
3 |
p |
2 |
|
10 |
3 |
10 |
3 |
16 |
3 |
x2 |
9 |
y2 |
16 |
A.(x+5)2+y2=9 | B.(x+5)2+y2=16 | C.(x-5)2+y2=9 | D.(x-5)2+y2=16 |
A.以A,B为焦点,短轴长为
| ||
B.以A,B为焦点,实轴长为2k米的双曲线上. | ||
C.以AB为直径的圆上. | ||
D.以A,B为顶点,虚轴长为
|
x2 |
a2 |
y2 |
b2 |
A.5 | B.
| C.
| D.
|
b |
a |
A.在x轴上 |
B.在y轴上 |
C.党a>b时在x轴上,当a>b时在y轴上 |
D.不能确定在x轴上还是在y轴上 |
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