orthax.orthsub

orthax.orthsub(c1, c2, rec)Source 

Subtract one orthogonal series from another.

Returns the difference of two orthogonal series c1 - c2. The sequences of coefficients are from lowest order term to highest, i.e., [1,2,3] represents the series P_0 + 2*P_1 + 3*P_2.

Parameters:

c1 (array_like) – 1-D arrays of orthogonal series coefficients ordered from low to high.
c2 (array_like) – 1-D arrays of orthogonal series coefficients ordered from low to high.
rec (AbstractRecurrenceRelation) – Recurrence relation for the family of orthogonal polynomials.

Returns:

out (ndarray) – Of orthogonal series coefficients representing their difference.