该源代码编程实现了分别用复化梯形积分法、复化Simpson积分法和Guass积分法求解Fredholm积分方程的数值解的问题，非常值得学习。-The source code for programming of complex, respectively, of trapezoidal integration method, rehabilitation of Simpson integration method, and Guass

用复化梯形积分法、复化Simpson积分法和Guass积分法求解Fredholm积分方程-Using the repeated trapezoidal integration method, complex integration method of Simpson and Guass integral method for solving Fredholm integral equation

梯形法求解fredholm第二类方程，非常简单的程序，稍微修改就可以求解fredholm第一类积分方程(Trapezoidal method for solving Fredholm second equations, very simple procedure, slightly modified, you can solve the Fredholm integral equation of the first kind)