function y=hanshu(n)
syms q d u m;
if mod(n,2)==0
y=(5*q*d-10*u*d)*n+m*d*(q-u)/3;
else
y=5*(n+1)*q*d-10*n*q*d-m*d*u/3;
endq d u m怎么赋值呢　　function y=hanshu(n，q,d ,u,m)if mod(n,2)==0y=(5*q*d-10*u*d)*n+m*d*(q-u)/3;elsey=5*(n+1)*q*d-10*n*q*d-m*d*u/3;end