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: 


Returns: 

>>> 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.])
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https://docs.scipy.org/doc/numpy1.17.0/reference/generated/numpy.polynomial.polynomial.polysub.html