运筹学计算机题max z=2x1-x2+2x3;约束条件为:x1+x2+x3>=6-2x1+x3>=22x2-x3>=0
写出下面线性规划的对偶规划min Z=3X1+2X2+X3; X1+X2+X3≤6;X1-X3≥4;X2-X3≥3;X1
已知x1,x2,x3∈(0,+∞),且x1+x2+x3=1.求证x1^2/(x1+x2)+x2^2/(x2+x3)+x3
求解运筹学试题,急,已知线性规划问题:maxZ=2x1+3x2-5x3 x1+x2+x3=7 2x1-5x2+x3>=1
x1,x2,x3,是x^3+px+2=0的三个根,计算行列式 :|x1 x2 x3| |x2 x3 x1| |x3 x1
运筹学中基本解的求法线形规划的约束条件:2X1+X2+X3=5 2X1+2X2+X4=6 X1,X2,X3,X4>=0基
求线性方程组 x2-x3-x4=0 x1+x2-x3+3x4=1 x1-x2+x3+5x4=-1 x1+2x2-2x3+
max z=5*x1+2*x2^2+x3^2 x1+4*x2+3*x3=6 x(i)>=0,i=1,2,3 用lingo
解方程组X1+X2+X3=0,2X2-X3=1,X1-X2+2X3=-1.
X1+2X2-X3+X4=1
{2X1-X2+3X3=3
解方程组x1+x2=4,x2+x3=-6,x3+x1=2
线性方程组{2x1-x2-2x3=λx1{5x1-3x2-3x3=λx2{-x1+2x3=-λx3有非零解,则λ=