x2 |
16 |
y2 |
9 |
∴設(shè)雙曲線方程為:
x2 |
16 |
y2 |
9 |
又∵點(diǎn)A(2
3 |
12 |
16 |
9 |
9 |
1 |
4 |
可得所求雙曲線方程為:
x2 |
16 |
y2 |
9 |
1 |
4 |
化成標(biāo)準(zhǔn)形式,得
y2 | ||
|
x2 |
4 |
9 |
4 |
9 |
4 |
25 |
4 |
因此,離心率滿(mǎn)足e2=
| ||
|
25 |
9 |
5 |
3 |
x2 |
16 |
y2 |
9 |
3 |
x2 |
16 |
y2 |
9 |
x2 |
16 |
y2 |
9 |
3 |
12 |
16 |
9 |
9 |
1 |
4 |
x2 |
16 |
y2 |
9 |
1 |
4 |
y2 | ||
|
x2 |
4 |
9 |
4 |
9 |
4 |
25 |
4 |
| ||
|
25 |
9 |
5 |
3 |