python-scipyHow can I use Python and SciPy to perform numerical integration?

Python and SciPy can be used to perform numerical integration with the scipy.integrate sub-package. The scipy.integrate.quad function is a general purpose function for numerical integration of a function of one variable over a given fixed range.

For example, to integrate the function f(x) = x^2 from 0 to 3, the following code can be used:

from scipy.integrate import quad

def f(x):
    return x**2

result, error = quad(f, 0, 3)
print(result)

This will output 9.0 which is the result of the integration.

Code explanation

1. from scipy.integrate import quad - imports the quad function from the scipy.integrate sub-package
2. def f(x): - defines the function to be integrated
3. result, error = quad(f, 0, 3) - calls the quad function to integrate the function f from 0 to 3
4. print(result) - prints the result of the integration

Helpful links

• scipy.integrate
• scipy.integrate.quad

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