python、Matlab求定积分的实现

from sympy import *
x = symbols('x')
print(integrate(sin(2*x)/(1+x**2), (x, 0, 3)))

integrate(f, (x, lower_bound, upper_bound))
# f-函数，x-变量，lower_bound-下限，upper_bound-上限

syms x
f = sin(2*x)/(1+x^2)
int(f, x, 0, 3) 

syms x
f = @(x) sin(2*x)/(1+x^2) #句柄
integral(f, 0, 3)