numpy.polynomial.polynomial.polysub — NumPy v2.2 Manual (original) (raw)

polynomial.polynomial.polysub(c1, c2)[source]#

Subtract one polynomial from another.

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, c2array_like

1-D arrays of polynomial coefficients ordered from low to high.

Returns:

outndarray

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) array([-2., 0., 2.]) P.polysub(c2, c1) # -P.polysub(c1,c2) array([ 2., 0., -2.])