minus.m

matlab实用教程

function r = minus(p,q)
% POLYNOM/MINUS 实现polynoms对象q，p的减法 p - q.
p = polynom(p);
q = polynom(q);
k = length(q.c) - length(p.c);
r = polynom([zeros(1,k) p.c] - [zeros(1,-k) q.c]);