`numpy.polynomial.polynomial:polysub`

source: build-install/usr/lib/python3.14/site-packages/numpy/polynomial/polynomial.py :251

Signature

def polysub ( c1 , c2 )

Summary

Subtract one polynomial from another.

Extended Summary

Returns the difference of two polynomials c1 - c2. The arguments are sequences of coefficients from lowest order term to highest, i.e., [1,2,3] represents the polynomial 1 + 2*x + 3*x**2.

Parameters

c1, c2 : array_like: 1-D arrays of polynomial coefficients ordered from low to high.

Returns

out : ndarray: Of coefficients representing their difference.

Examples

from numpy.polynomial import polynomial as P
c1 = (1, 2, 3)
c2 = (3, 2, 1)
P.polysub(c1,c2)
P.polysub(c2, c1)  # -P.polysub(c1,c2)

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Aliases

numpy.polynomial.Polynomial._sub
numpy.polynomial.polynomial.polysub