方法2,利用m程序自动加零 function y-polyadd(x1, x2) nI=length(x1) n2=length(x2) if nI>n2 x2=zeros(1, n1-n2), x2 elseif nl<n2 xI=zeros(l, n2-n1), x2 end, y=x1+2• 方法2,利用m程序自动加零 • function y=polyadd(x1,x2) • n1=length(x1); • n2=length(x2); • if n1>n2 x2=[zeros(1,n1-n2),x2]; • elseif n1<n2 x1=[zeros(1,n2-n1),x2]; • end, y=x1+x2