romb - Use Romberg Integration to compute integral from - (2**k + 1) evenly-spaced samples. simpson - Use Simpson's rule to compute integral from samples. cumulative_trapezoid - Use trapezoidal rule to cumulatively compute integral. trapezoid - Use trapezoidal rule to compute integral. Methods for Integrating Functions given fixed samples. romberg - Integrate func using Romberg integration. quadrature - Integrate with given tolerance using Gaussian quadrature. fixed_quad - Integrate func(x) using Gaussian quadrature of order n. tplquad - General purpose triple integration. dblquad - General purpose double integration. help ( integrate ) Methods for Integrating Functions given function object.