Python | Numpy np.lagfromroots() method

Python | Numpy np.chebfromroots() method

Last Updated : 11 Nov, 2019

With the help of np.chebfromroots() method, we can get the chebyshev series with the roots passed as parameter in np.chebfromroots() method.

Syntax : np.chebfromroots(roots)
Return : Return the chebyshev series.

Example #1 :
In this example we can see that by using np.chebfromroots() method, we are able to get the chebyshev series that is generated by roots those are passed by parameter.

# import numpy 
import numpy as np 
import numpy.polynomial.chebyshev as cheb 
  
# using np.chebfromroots() method 
gfg = cheb.chebfromroots((2, 4, 8, 1)) 
  
print(gfg) 

Output :

[9.9375e+01 -1.3125e+02 3.5500e+01 -3.7500e+00 1.2500e-01]

Example #2 :

# import numpy 
import numpy as np 
import numpy.polynomial.chebyshev as cheb 
  
# using np.chebfromroots() method 
gfg = cheb.chebfromroots((-3, 4, -5, 1, 10)) 
  
print(gfg) 

Output :

[-5.19125e+02 4.52375e+02 8.00000e+01 -1.24375e+01 -8.75000e-01 6.25000e-02]

Python | Numpy np.lagfromroots() method

J

Jitender_1998

Improve

Article Tags :

Practice Tags :

python

Similar Reads

Python | Numpy np.chebroots() method

With the help of np.chebroots() method, we can get the roots of chebyshev series by using np.chebroots() method. Syntax : np.chebroots(array of coefficients) Return : Return the array having roots of chebyshev series. Example #1 : In this example we can see that by using np.chebroots() method, we ar

Python | Numpy np.legfromroots() method

np.legfromroots() method is used to generate a legendre series with given roots. Syntax : np.legfromroots(roots) Parameters: roots :[array_like] Input sequence containing the roots. Return : [ndarray] 1-D array of coefficients of legendre series. Code #1 : # Python program explaining # numpy.legfrom

Python | Numpy np.lagfromroots() method

np.lagfromroots() method is used to generate a Laguerre series with given roots. Syntax : np.lagfromroots(roots) Parameters: roots :[array_like] Input sequence containing the roots. Return : [ndarray] 1-D array of coefficients of Laguerre series. Code #1 : # Python program explaining # numpy.lagfrom

Python | Numpy np.chebfit() method

With the help of np.chebfit() method, we can get the least square fit of chebyshev series by using np.chebfit() method. Syntax : np.chebfit(x, y, degree) Return : Return the array of chebyshev series coefficient values. Example #1 : In this example we can see that using np.chebfit() method, we are a

Python | Numpy np.legroots() method

np.legroots() method is used to compute the roots of a legendre series.Return the roots of the polynomial. Syntax : np.legroots(c) Parameters: c :[array_like] 1-D arrays of legendre series coefficients. Return : [ndarray] Array of the roots of the series. If all the roots are real, then out is also

Python | Numpy np.hermzero() method

With the help of np.hermzero() method, we can use hermzero instead of np.zeros by using np.hermzero() method. Syntax : np.hermzero() Return : Return array([0]) Example #1 : In this example we can see that by using np.hermzero() method, we are able to get the functionality of np.zeros as same as this

Python | Numpy np.chebsub() method

With the help of np.chebsub() method, we can get the subtraction of two Chebyshev series by using np.chebsub() method. Syntax : np.chebsub(s1, s2) Return : Return an array after subtraction. Example #1 : In this example we can see that by using np.chebsub() method, we are able to get the subtraction

Python | Numpy np.chebpow() method

With the help of np.chebpow() method, we can get the power of Chebyshev series by using np.chebpow() method. Syntax : np.chebpow(s1, power) Return : Return an array after power the series. Example #1 : In this example we can see that by using np.chebpow() method, we are able to get the power of cheb

Python | Numpy np.chebder() method

With the help of np.chebder() method, we can get the differentiated value of chebyshev series in the form of an array having value of coordinates using np.chebder() method. Syntax : np.chebder(series, value) Return : Return an array having coordinates of series after differentiation. Example #1 : In

Python | Numpy np.chebmul() method

With the help of np.chebmul() method, we can get the multiplication of two Chebyshev series by using np.chebmul() method. Syntax : np.chebmul(s1, s2) Return : Return an array after multiplication. Example #1 : In this example we can see that by using np.chebmul() method, we are able to get the multi