当实数x,y,满足约束条件{x>0 y>=x 2x+y+k

当实数x,y,满足约束条件{x>0 y>=x 2x+y+k 已知实数x,y满足约束条件x+y>3,y 实数x,y满足约束条件.求范围实数x,y满足约束条件x-y+2>=0 x+y-4>0x 若实数x,y满足约束条件x-y-2=0,2y-3 x、y满足的约束条件0 设X,Y满足约束条件X+Y 设实数x,y满足约束条件：x>=2;y>=x;2x+y 已知实数x,y满足约束条件:x>=2 y>=2 x+y 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, 已知实数x,y满足约束条件x≥0 y≤x 2x+y-9≤0,则z=x+3y的最大值等于? 若实数对（x,y)满足约束条件x>0y大于等于x 2x+y-3小于等于0则y+1/x的最小值 满足约束条件(绝对值x)+2(绝对值y) 已知变量x,y满足约束条件1 已知x,y满足约束条件1 已知实数x,y满足约束条件x+y≤1,x≥0,y≥0则z=x-y的最大值是?RT 已知实数x,y满足约束条件x+y=1,y>=1,则z=y/x的最小值 已知x,y满足约束条件x-y+5>=0 x+y>=0 X 已知x,y满足约束条件：x-y+1>=0,x+y-2>=0,x