【正文】 gin(x10)。gin(x6)。gin(x2)。12000/((12000*77*x1+10800*98*x2+11200*117*x3)/(77*x1+98*x2+117*x3))。x10=50。x8=100。x6=150。x4=150。x2=50。gin(x11)。gin(x7)。gin(x3)。(77*x1+98*x2+117*x3+145*x4+156*x5+167*x6+178*x7+126*x8+103*x9+129*x10+133*x11)/=。x10=400。x8=x6=350。x4=500。x2=500。[x, y] = eig(A)eigenvalue = diag(y)結(jié)果為：x = Columns 1 through 5 + + + + + + Columns 6 through 10 + + + + + + + + Column 11 + + + + y = Columns 1 through 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Columns 6 through 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + 0 0 0 0 0 Column 11 0 0 0 0 0 0 0