New in version 1.4.0.

Power Series (numpy.polynomial.polynomial)

This module provides a number of objects (mostly functions) useful for dealing with polynomials, including a Polynomial class that encapsulates the usual arithmetic operations. (General information on how this module represents and works with polynomial objects is in the docstring for its “parent” sub-package, numpy.polynomial).

Classes

Polynomial(coef[, domain, window, symbol])

A power series class.

Constants

polydomain	An array object represents a multidimensional, homogeneous array of fixed-size items.
polyzero	An array object represents a multidimensional, homogeneous array of fixed-size items.
polyone	An array object represents a multidimensional, homogeneous array of fixed-size items.
polyx	An array object represents a multidimensional, homogeneous array of fixed-size items.

Arithmetic

polyadd(c1, c2)	Add one polynomial to another.
polysub(c1, c2)	Subtract one polynomial from another.
polymulx(c)	Multiply a polynomial by x.
polymul(c1, c2)	Multiply one polynomial by another.
polydiv(c1, c2)	Divide one polynomial by another.
polypow(c, pow[, maxpower])	Raise a polynomial to a power.
polyval(x, c[, tensor])	Evaluate a polynomial at points x.
polyval2d(x, y, c)	Evaluate a 2-D polynomial at points (x, y).
polyval3d(x, y, z, c)	Evaluate a 3-D polynomial at points (x, y, z).
polygrid2d(x, y, c)	Evaluate a 2-D polynomial on the Cartesian product of x and y.
polygrid3d(x, y, z, c)	Evaluate a 3-D polynomial on the Cartesian product of x, y and z.

Calculus

polyder(c[, m, scl, axis])	Differentiate a polynomial.
polyint(c[, m, k, lbnd, scl, axis])	Integrate a polynomial.

Misc Functions

polyfromroots(roots)	Generate a monic polynomial with given roots.
polyroots(c)	Compute the roots of a polynomial.
polyvalfromroots(x, r[, tensor])	Evaluate a polynomial specified by its roots at points x.
polyvander(x, deg)	Vandermonde matrix of given degree.
polyvander2d(x, y, deg)	Pseudo-Vandermonde matrix of given degrees.
polyvander3d(x, y, z, deg)	Pseudo-Vandermonde matrix of given degrees.
polycompanion(c)	Return the companion matrix of c.
polyfit(x, y, deg[, rcond, full, w])	Least-squares fit of a polynomial to data.
polytrim(c[, tol])	Remove "small" "trailing" coefficients from a polynomial.
polyline(off, scl)	Returns an array representing a linear polynomial.

See Also

numpy.polynomial