By definition, the sum of the distances from a moving point to two fixed points is a constant value. 2a is the major axis, 2b is the minor axis, and 2c is the focal length.
Party A = Party B+Party C. Eccentricity e = c/a
Eccentricity should be less than 1 and greater than 0.
hyperbola
By definition, the difference between the distance of a moving point and two fixed points is a constant value. 2a is the major axis, 2b is the minor axis, and 2c is the focal length.
Square of c = square of b+square of a.
Eccentricity e = c/a
Eccentricity is greater than 1.
The hyperbolic asymptote equation is y =+-b/a.
x
That's all you often take.