关于数值分析的程序，做高斯积分！采用了两种数值方法做的积分函数！-Numerical Analysis about the procedures to do Gaussian integral! Two numerical methods using the integral function to do!

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 integral method for solving Fr