设变量X,Y满足约束条件{X-Y+3>=0,X+Y>=0,-2

设变量X,Y满足约束条件{X-Y+3>=0,X+Y>=0,-2 已知变量x,y满足约束条件x+2y-3=0,y-1 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 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x,y满足约束条件x>=0 y>=x 4x+3y 设x,y满足约束条件x>=0 x>=y 2x-y 若变量x,y满足约束条件{x>=-1;y>=x;3x+2y 设变量x，y满足约束条件x−y≥0x+y≤1x+2y≥1 设变量x,y满足约束条件x-y>=-1,x+y>=1,3x-y 设变量x,y满足约束条件x-y>=0,x+y=1,则目标函数Z=3x+y的最大值为多少? 设变量x,y满足约束条件x-y>-1,x+y>1,3x-y 设变量x,y满足约束条件2x+y≤2,x≥y,y≥-1,则z=-y+3x的最大值为?