numpy.
polysub
Difference (subtraction) of two polynomials.
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.
a1 - a2
poly1d
Minuend and subtrahend polynomials, respectively.
Array or poly1d object of the difference polynomial’s coefficients.
See also
polyval, polydiv, polymul, polyadd
polyval
polydiv
polymul
polyadd
Examples
System Message: WARNING/2 ((2 x^2 + 10 x - 2) - (3 x^2 + 10 x -4) = (-x^2 + 2) )
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>>> np.polysub([2, 10, -2], [3, 10, -4]) array([-1, 0, 2])
