Python | Numpy np.cheb2poly() method (original) (raw)

Last Updated : 03 Nov, 2019

With the help of **np.cheb2poly()** method, we can get the polynomial from chebyshev series by using np.cheb2poly() method.

Syntax : np.cheb2poly(array) Return : Return array having coefficients of polynomial.

**Example #1 :**In this example we can see that by using np.cheb2poly() method, we are able to get the polynomial from chebyshev series by using this method.

Python3 1=1 `

import numpy

import numpy as np from numpy import polynomial as P

x = np.array([2, 5, 7])

using np.cheb2poly() method

gfg = P.Chebyshev(x) gfg = gfg.convert(kind = P.Polynomial) gfg = P.chebyshev.cheb2poly(gfg)

print(gfg)

[Polynomial([-5., 5., 14.], domain=[-1., 1.], window=[-1., 1.])]

Example #2 :