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.
# 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 :
# import numpy import numpy as np from numpy import polynomial as P x = np.array([2, 3, 5, 7, 11]) # using np.cheb2poly() method gfg = P.Chebyshev(x) gfg = gfg.convert(kind = P.Polynomial) gfg = P.chebyshev.cheb2poly(gfg) print(gfg) |
[Polynomial([8., -18., -78., 28., 88.], domain=[-1., 1.], window=[-1., 1.])]
