Asssume that predator A , travelling at a speed of "d"mph, is pursuing prey B, which is travelling at a speed of "e"mph.In addition assume that A begins (at time t=0)at the origin and pursue B which begins at the point(b,o),b>0 and travel up the line x=b. After t hour A is located at point (x,y).In addition it is assumed that A is always heading directly at B.Our goal is to find Y as a function of X. This problem is related to curve of pursuit