Python | Numpy np.polydomain() method Last Updated : 31 Dec, 2019 Comments Improve Suggest changes Like Article Like Report With the help of np.polydomain() method, we can get the filter having value array([-1, 1]) in polynomial series. Syntax : np.polydomain Return : Return filter of array([-1, 1]) Example #1 : Python3 1=1 # Python program explaining # numpy.polydomain() method # import numpy and polydomain import numpy as np from numpy.polynomial.polynomial import polydomain # using np.polydomain() method for i in range(5): ans = polydomain + [i, i + 1] print(ans) Output : [-1 2] [0 3] [1 4] [2 5] [3 6] Example #2 : Python3 1=1 # Python program explaining # numpy.polydomain() method # import numpy and polydomain import numpy as np from numpy.polynomial.polynomial import polydomain # using np.polydomain() method for i in range(4): ans = polydomain + [i-1, i + 1] print(ans) Output : [-2 2] [-1 3] [0 4] [1 5] Comment More infoAdvertise with us Next Article Python | Numpy np.polyvander() method J jana_sayantan Follow Improve Article Tags : Python Python-numpy Python numpy-Mathematical Function Practice Tags : python Similar Reads Python | Numpy np.polyone() method np.polyone() method can be used instead of np.ones for creating a array whose elements are 1. Syntax : np.polyone() Return : Return array([1]) Example #1 : Python3 1=1 # Python program explaining # numpy.polyone() method # import numpy and polyone import numpy as np from numpy.polynomial.polynomial 1 min read Python | Numpy np.polyone() method np.polyone() method can be used instead of np.ones for creating a array whose elements are 1. Syntax : np.polyone() Return : Return array([1]) Example #1 : Python3 1=1 # Python program explaining # numpy.polyone() method # import numpy and polyone import numpy as np from numpy.polynomial.polynomial 1 min read Python | Numpy np.polyvander() method np.polyvander() method is used to returns the Vandermonde matrix of degree deg and sample points x. Syntax : np.polyvander(x, deg) Parameters: x :[ array_like ] Array of points. The dtype is converted to float64 or complex128 depending on whether any of the elements are complex. If x is scalar it is 1 min read Python | Numpy np.polyvander() method np.polyvander() method is used to returns the Vandermonde matrix of degree deg and sample points x. Syntax : np.polyvander(x, deg) Parameters: x :[ array_like ] Array of points. The dtype is converted to float64 or complex128 depending on whether any of the elements are complex. If x is scalar it is 1 min read Python | Numpy np.polyzero() method np.polyzero() method can be used instead of np.zeros for creating a array whose elements are 0. Syntax : np.polyzero() Return : Return array([0]) Example #1 : Python3 1=1 # Python program explaining # numpy.polyzero() method # import numpy and polyzero import numpy as np from numpy.polynomial.polyno 1 min read Python | Numpy np.polyzero() method np.polyzero() method can be used instead of np.zeros for creating a array whose elements are 0. Syntax : np.polyzero() Return : Return array([0]) Example #1 : Python3 1=1 # Python program explaining # numpy.polyzero() method # import numpy and polyzero import numpy as np from numpy.polynomial.polyno 1 min read Like