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.])]