bundles / numpy latest / numpy / polysub
_ArrayFunctionDispatcher
numpy:polysub
source: /dev/numpy/build-install/usr/lib/python3.14/site-packages/numpy/lib/_polynomial_impl.py:864
Signature
def polysub(a1, a2)Summary
Difference (subtraction) of two polynomials.
Extended Summary
Given two polynomials a1 and a2, returns a1 - a2. a1 and a2 can be either array_like sequences of the polynomials' coefficients (including coefficients equal to zero), or poly1d objects.
Parameters
a1, a2: array_like or poly1dMinuend and subtrahend polynomials, respectively.
Returns
out: ndarray or poly1dArray or poly1d object of the difference polynomial's coefficients.
Examples
.. math:: (2 x^2 + 10 x - 2) - (3 x^2 + 10 x -4) = (-x^2 + 2)import numpy as np
✓np.polysub([2, 10, -2], [3, 10, -4])
✓array([-1, 0, 2])
See also
Aliases
numpy.polysub