hyperbola

[数] 双曲线英释中释na conic section formed by a plane that cuts both bases of a cone; it consists of two branches asymptotic to two intersecting fixed lines and has two foci

1 I should be looking only on the hyperbola..我应该只看双曲线上的点就足够了。

2 Yes, we can still find points on the hyperbola and so on..我们仍然可以在双曲线上找到解。

3 If you look at this point where the hyperbola and the circle touch each other, first of all, I don't know which circle I am going to look at..来看一下这一点,这里双曲线和圆刚好接触的地方，首先，我不知道我要看的是圆上面的哪一点。