求解数值积分的程序，主要功能是求解一定区间函数的数值积分值。功能强大，应用方便。欢迎指导。谢谢！-QUAD　Numerically evaluate integral, adaptive Lobatto quadrature.function FUN from A to B to within an error of 1.e-6 using high order

　　recursive adaptive quadrature.　FUN is a function handle. The function

　　Y=FUN(X) should accept a vector argument X and return a vector result

　　Y, the integrand evaluated at each element of X.