how can i write this equation in matlab?
min z = sum sum sum sum (f(i,k))*(d(j,q))*(x(i,j))*(x(k,q))
i and k is a facilities..
facilities i and facilities k...
j and q is a location...
location j and location q ...
f (i,k) mean flow between facility i and k..
d(j, q) mean distance between facility j to q