The focus of hyperbola is f, a is the right vertex, the intersection of left quasilinear x-axis is B, and a is the midpoint of FB

The focus of hyperbola is f, a is the right vertex, the intersection of left quasilinear x-axis is B, and a is the midpoint of FB

Because the Quasilinear equation of hyperbola is x = positive and negative a ^ 2 / C, the equation of its left quasilinear is x = negative a ^ 2 / C, and from the meaning of the title, we get f (C, 0) a (a, 0) (just draw the image), so AF = AB, that is: A ^ 2 / C + a = C-A, which is reduced to: A ^ 2 + 2ac-c ^ 2 = 0.1, because e = C / a divide 1 by AC to get: 1 / E-E + 2 = 0