设x,y满足约束条件x>=0 x>=y 2x-y
设x,y满足约束条件x>=0 x>=y 2x-y
设变量X,Y满足约束条件{X-Y+3>=0,X+Y>=0,-2
设x,y满足约束条件x>=0 y>=x 4x+3y
设X,Y满足约束条件X+Y
已知x,y满足约束条件:x-y+1>=0,x+y-2>=0,x
设变量x,y满足约束条件 {x-y≥0,x+y≤1,x+2y≥0},则函数Z=2x+y 的最大值?
设变量x y满足约束条件x-y≥-1 x+y≥1 2x-y≤1 z=(x-2y)/(x+y)的最大值
设x y 满足约束条件 x≤0 x≤y 2x-y+1≥0 则z=3x+2y的最大值
设xy满足约束条件x>=0 y>=0 4x+3y=0
已知x,y满足约束条件x-y+5>=0 x+y>=0 X
若变量x,y满足约束条件{x>=-1;y>=x;3x+2y
设变量xy满足约束条件x-y≥0,x+y-2≥0,3x-y-6≤0则目标函数z=2x-y