Python | Numpy np.lagder() method Last Updated : 29 Dec, 2019 Comments Improve Suggest changes Like Article Like Report np.lagroots() method is used to differentiate a Laguerre series. Syntax : np.lagder(c, m=1, scl=1, axis=0) Parameters: c :[array_like] 1-D arrays of Laguerre series coefficients ordered from low to high. m :[int, optional] Number of derivatives taken, must be non-negative.Default is 1. scl :[scalar, optional] Each differentiation is multiplied by scl .Default is 1. axis :[ int, optional] Axis over which the derivative is taken.Default is 0. Return : [ndarray] Laguerre series of the derivative. Code #1 : Python3 # Python program explaining # numpy.lagder() method # importing numpy as np # and numpy.polynomial.laguerre module as geek import numpy as np import numpy.polynomial.laguerre as geek # Input laguerre series coefficients s = (2, 4, 8) # using np.lagder() method res = geek.lagder(s) # Resulting laguerre series coefficient print (res) Output: [-12. -8.] Code #2 : Python3 # Python program explaining # numpy.lagder() method # importing numpy as np # and numpy.polynomial.laguerre module as geek import numpy as np import numpy.polynomial.laguerre as geek # Laguerre series coefficients s = (1, 2, 3, 4, 5) # using np.lagder() method res = geek.lagder(s, m = 2, scl = 0.5) # Resulting laguerre series print (res) Output: [ 6.5 3.5 1.25] Comment More infoAdvertise with us Next Article Python | Numpy np.lagder() method jana_sayantan Follow Improve Article Tags : Python Python-numpy Python numpy-Mathematical Function Practice Tags : python Similar Reads Python | Numpy np.lagzero() method np.lagzero() method can be used instead of np.zeros for creating a array whose elements are 0. Syntax : np.lagzero() Return : Return array([0]) Example #1 : Python3 1=1 # Python program explaining # numpy.lagzero() method # import numpy and lagzero import numpy as np from numpy.polynomial.laguerre i 1 min read Python | Numpy np.lagvander() method With the help of np.lagvander() method, we can get the Pseudo-Vandermonde matrix from given array having degree which is passed as parameter by using np.lagvander() method. Syntax : np.lagvander(arr, degree) Parameters: arr :[ array_like ] Array of points. The dtype is converted to float64 or comple 2 min read Python | Numpy np.lagdiv() method np.lagdiv() method is used to divide one Laguerre series to another.It returns the quotient-with-remainder of two Laguerre series c1 / c2. Syntax : np.lagdiv(c1, c2) Parameters: c1, c2 :[ array_like ] 1-D arrays of Laguerre series coefficients ordered from low to high. Return : [ndarray] Laguerre se 1 min read Python | Numpy np.lagvander2d() method With the help of np.lagvander2d() method, we can get the Pseudo-Vandermonde matrix from given array having degree which is passed as parameter by using np.lagvander2d() method. Syntax : np.lagvander2d(x, y, deg) Parameters: x, y :[ array_like ] Array of points. The dtype is converted to float64 or c 2 min read Python | Numpy np.lagvander3d() method np.lagvander3d() method is used to returns the Vandermonde matrix of degree deg and sample points x, y and z. Syntax : np.lagvander3d(x, y, z, deg) Parameters: x, y, z :[ array_like ] Array of points. The dtype is converted to float64 or complex128 depending on whether any of the elements are comple 2 min read Like