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>-1,x+y>1,3x-y
设变量x,y满足约束条件x-y>=-1,x+y>=1,3x-y
已知变量x,y满足约束条件1
设变量x,y满足约束条件x+y≤3x−y≥−1y≥1
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+3>=0,X+Y>=0,-2
设X,Y满足约束条件X+Y
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?
已知变量x,y满足约束条件x+2y-3=0,y-1
设变量x.y满足约束条件=> 1)x+y>=3 2)x-y>=-1 3)2x-y