若x，y满足2x+y-1≤0y≥0x≥0

若x，y满足2x+y-1≤0y≥0x≥0 若变量x，y满足约束条件x+y≤2x≥1y≥0 若实数x,y满足约束条件x-y≥0,x+y≥0,2x+y≤1,则y/(x+1)的最大值是多少, .若x、y满足约束条件 x - y +1≥0 设变量x，y满足约束条件x−y≥0x+y≤1x+2y≥1 若实数x，y满足x≥1x+y≤4x−2y+c≤0 若实数x，y满足不等式组x-y+1≥0x+y-1≤0y≥0 若实数x,y满足x-4y+3≤0,3x+5y-25≤0,x≥1,则2x-y的最大值是多少 若实数x、y，满足x≥0y≥04x+3y≤12 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? 若实数x，y满足x−y+1≥0x+y≥0x≤0 已知实数x,y满足条件x≥0,y≥x,3x+4y≤12,则(x+2y+3)/(x +1)的最大值是