通过理论分析和编程计算，分别用复合5点 Gauss-Legendre 求积公式、 Romberg 求积算法求出了给定函数的近似积分值，并进行相互比较。-Through theoretical analysis and programming, respectively, at 5:00 with a composite Gauss-Legendre quadrature formula, Romberg quadrature algorithm derived for a given function of the approximate integral value and compared with each other.