D1

D2

Dn

Supply

S1

x11

x12

x1n

a1

c 11 ± α 1 ± β 1

c 12 ± α 1 ± β 2

c 1 n ± α 1 ± β n

S2

x21

x22

x2n

a2

c 21 ± α 2 ± β 1

c 22 ± α 2 ± β 2

c 2 n ± α 2 ± β n

Sm

xm1

xm2

xmn

am

c m 1 ± α m ± β 1

c m 2 ± α m ± β 2

c m n ± α m ± β n

Demand

b1

b2

bn