该文件是使用matlab编写的工具函数，内附注释，是计算积分的两个小工具，里面还有两个测试函数。分别使用梯形求积分和高斯函数求积分。-The file is written using matlab utility functions, containing notes, two small tools to calculate integrals, there were two test functions. Respectively trapezoidal quadrature and Ga