min 3x1+16x2+16x3+50x4+39x5+52x6+45x7+10x8+15x9s.t.56x1+113x4+109x6+179x7+56x8+34x9>=9049x2+45x5>=6060x1+46x3+46x8>=8025x1+7x6+8x7+8x8+5x9>=9040x1+275x4+110x6+55x7>=60x1

帮我用lingo或者lindo算个题呗?x1+x4+x5+x6+x7>20x1+x2+x5+x6+x7>13x1+x2+x3+x6+x7>10x1+x2+x3+x4+x7>12x1+x2+x3+x4+x5+>16x2+x3+x4+x5+x6+>18x3+x4+x5+x6+x7>20格式不对也改下哈,>在lingo中应该和>=一样吧?min=(5x1+4x2+3x3+3x4+3x5+3x6+4x7) 求非齐次线性方程组的基础解析X1+2X2+X3-X4=43X1+6X2-X3-3X4=85X1+10X2+X3-5X4=16 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,X2,X3≥0 min 3x1+16x2+16x3+50x4+39x5+52x6+45x7+10x8+15x9s.t.56x1+113x4+109x6+179x7+56x8+34x9>=9049x2+45x5>=6060x1+46x3+46x8>=8025x1+7x6+8x7+8x8+5x9>=9040x1+275x4+110x6+55x7>=60x1 用线性代数解x1+3x2+5x3+7x4 =12,3x1+5x2+7x3+x4=0,5x1+7x2+x3+3x4=1,7x1+x2+3x3+5x4=16 matlab 求解二次规划 最小值min 1.5*x1^2-x1*x2+x2^2+2*x1*x3+2*x3^2+x1-3*x2-2*x3s.t.3*x1-2*x2+5*x3 LP模型：max 50x1 +80x2 +30x3 +40x4 +15x5s.t.500x1 +1000x2 +100x3 +300x4 +80x5 ≤20 000x1 + x2 ≥8x3 + x4 ≥15500x1+ 1000x2 ≤12 000x1 ≤16,x2≤10,x3≤24,x4≤4,x5≤25,x1,x2,…,x5 ≥0.max z=50x1 +80x2 +70x3,s.t.12x1 +7x2 +8x3 ≤ 80002x1 方程组3x1+x2+x3 写出下列线性规划问题的标准型max S=3x1+5x2-x3x1+2x2+x3 ≥6s.t 2x1+x2+3x3 ≤16x1 ≥0 ,x2≥ 0,x3无约束 Min Z= X1 +X2 +X3 +X4 +X5 +X6 +X7 +X8S.T.2X1 +X2 +X3 +X4 =1002X2 +X3 + 3X5 +2X6 + X7 =100X1 + X3 + 3X4 +2X6 +3X7 +4X8 =100X1,X2,X3,X4,X5 ,X6,X7,X8 >=0经过计算的最优解是X*= (40 ,20,0,0,0 ,30 ,0 ,0)T Z* =90但该解也是最优解X*= (10 ,50,0 求线性方程组第一行x1+x2+4x3=4第二行-x1+4x2+x3=16第三行x1-x2+2x3=-4的通解 min=x1*log(x1)+x2*log(x2)+x3*log(x3)；约束是x1+x2+x3=1; 为什么在lingo里报错.请大侠指导 min=x1*log(x1)+x2*log(x2)+x3*log(x3)；约束是x1+x2+x3=1; 为什么在lingo里报错.请大侠指导 用消元法解下列线性方程组3x1+4x2-5x3+7x4=0,2x1-3x2+3x3-2x4=0,4x1+11x2-13x3+16x4=0,7x1-2x2+x3+3x4=0,x1=3/17x3-13/17x4,x2=19/17x3-20/17x4,其中x3,x4是自由未知量 shuxue (16 21:24:57)已知f(x)=x+x3,x1.x2.x3∈R且x1+x2,x2+x3,x1+x3均为正数,试判断f(x)+f(x2)+f(x3)的符号 min=19.7*0.93*x1+23.4*0.3*x2; min=0.4025*x1+0.155*x2;5*x1+4*x2+10*x3+2*x4+3*x5>=54;x都是整数,在lingo软件里面怎么解? 设X1,X2,X2是方程X3+PX+q=0的3个根,计算行列式 X1 X2 X3 X3 X1 X2 X2 X3 X1 min= X1+X2+X3+X4+X5X1+X2=100X1+2X3+X4=2002X2+X3+X4+X5=400求min的最小值?利用线性规划的单纯形法求解.要求每一步都要写出来,答案好的再加50分我知道答案是225，麻烦写出具体过程 还有x1,x2,x3,x4,x5>0