将随机数产生的数组在界面上的xy坐标轴上显示，并实时传递。-Random number generator will be at the interface of the array on the xy axis display, and real-time transmission.

Write a Matlab program which solves the initial value problem y  = (xy − y2)/x2, y(1) = 2, by the order four Runge-Kutta method, over the interval [1, 3] using steps of h = 1/128. The exact solution to this problem is given by y(x) = x/