Python | Scipy integrate.cumtrapz() method

With the help of scipy.integrate.cumtrapz() method, we can get the cumulative integrated value of y(x) using composite trapezoidal rule by using scipy.integrate.cumtrapz() method.

Syntax : scipy.integrate.cumtrapz()
Return : Return the cumulative integrated value of y(x).

Example #1 :
In this example we can see that by using scipy.integrate.cumtrapz() method, we are able to get the cumulative integration of y(x) using trapezoidal rule by using this method.

# import numpy and scipy.integrate.cumtrapz
import numpy as np
from scipy import integrate

x = np.arange(0, 10)
y = np.arange(0, 10)
# using scipy.integrate.cumtrapz() method
gfg = integrate.cumtrapz(y, x)

print(gfg)

Output :

[0.5 2. 4.5 8. 12.5 18. 24.5 32. 40.5]

Example #2 :

# import numpy and scipy.integrate.cumtrapz
import numpy as np
from scipy import integrate

x = np.arange(0, 10)
y = np.power(x, 2)
# using scipy.integrate.cumtrapz() method
gfg = integrate.cumtrapz(y, x)

print(gfg)

Output :

[0.5 3. 9.5 22. 42.5 73. 115.5 172. 244.5]