New in version 1.6.0.
Legendre Series (numpy.polynomial.legendre)
This module provides a number of objects (mostly functions) useful for dealing with Legendre series, including a Legendre class that encapsulates the usual arithmetic operations. (General information on how this module represents and works with such polynomials is in the docstring for its “parent” sub-package, numpy.polynomial).
Classes
  |  A Legendre series class.  |  
Constants
Arithmetic
  |  Add one Legendre series to another.  |  
  |  Subtract one Legendre series from another.  |  
  |  Multiply a Legendre series by x.  |  
  |  Multiply one Legendre series by another.  |  
  |  Divide one Legendre series by another.  |  
  |  Raise a Legendre series to a power.  |  
  |  Evaluate a Legendre series at points x.  |  
  |  Evaluate a 2-D Legendre series at points (x, y).  |  
  |  Evaluate a 3-D Legendre series at points (x, y, z).  |  
  |  Evaluate a 2-D Legendre series on the Cartesian product of x and y.  |  
  |  Evaluate a 3-D Legendre series on the Cartesian product of x, y, and z.  |  
Calculus
  |  Differentiate a Legendre series.  |  
  |  Integrate a Legendre series.  |  
Misc Functions
  |  Generate a Legendre series with given roots.  |  
  |  Compute the roots of a Legendre series.  |  
  |  Pseudo-Vandermonde matrix of given degree.  |  
  |  Pseudo-Vandermonde matrix of given degrees.  |  
  |  Pseudo-Vandermonde matrix of given degrees.  |  
  |  Gauss-Legendre quadrature.  |  
  |  Weight function of the Legendre polynomials.  |  
  |  Return the scaled companion matrix of c.  |  
  |  Least squares fit of Legendre series to data.  |  
  |  Remove “small” “trailing” coefficients from a polynomial.  |  
  |  Legendre series whose graph is a straight line.  |  
  |  Convert a Legendre series to a polynomial.  |  
  |  Convert a polynomial to a Legendre series.  |  
See also
numpy.polynomial
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Licensed under the 3-clause BSD License.
    https://numpy.org/doc/1.21/reference/routines.polynomials.legendre.html