c

If you use MathPartner, then please refer to the article:

G.I.Malaschonok. MathPartner Computer Algebra. Programming and Computer Software (2017) 43, N.2, 112–118.

(See also arxiv.org/abs/2204.11549, arxiv.org/abs/2204.11061, arxiv.org/abs/2204.11118 )