该程序实现：求积分方程的离散解并比较它与真解之间的误差，用n=4的复化Simpson公式求积分方程的近似解，然后用三次样条函数近似y（x）的离散解，并在区间[0,1]的一些点与真解1/（x+1）^2比较。-



















































The program implementation: integrating equation discrete solution and compare it with the error between the true solution, with n = 4 complex formula of Simpson seek an approximate solution of the integral equation, and then use the approximate cubic spline function y (x) of discrete solution, and in the interval [0,1] and the true solution at some point 1/(x+ 1) ^ 2 comparison.