numpy.polynomial.polynomial.polysub()

numpy.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:

Parameters:	c1, c2 : array_like 1-D arrays of polynomial coefficients ordered from low to high.
Returns:	out : ndarray Of coefficients representing their difference.

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

Links:

https://docs.scipy.org/doc/numpy-1.11.0/reference/generated/numpy.polynomial.polynomial.polysub.html

doc_NumPy

2025-01-10 15:47:30

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