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Python | Numpy np.chebval() method

Last Updated : 11 Nov, 2019
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With the help of np.chebval() method, we can get the array of coefficients after evaluation of x on chebyshev series by using np.chebval() method.
Syntax : np.chebval(x, c) Return : Return an array after evaluation on x.
Example #1 : In this example we can see that by using np.chebval() method, we are able to get the array of coefficients by evaluating x on chebyshev series. Python3 1=1 
# import numpy
import numpy as np
import numpy.polynomial.chebyshev as cheb

# using np.chebval() method
gfg = cheb.chebval((2, 5), (2, -4, 1))

print(gfg)
Output :
[ 1. 31.]
Example #2 : Python3 1=1 
# import numpy
import numpy as np
import numpy.polynomial.chebyshev as cheb

# using np.chebval() method
gfg = cheb.chebval((1, 3, 5, 7), (2, -4, 1, 5, 1))

print(gfg)
Output :
[5.0000e+00 1.0790e+03 7.2570e+03 2.5643e+04]

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Python | Numpy np.chebval() method

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