当x、y满足x>=0,y>=x,2x+y+k

当x、y满足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 当x,y满足条件x>=0,y 线性规划 当x.y满足x>=0,y 变量x,y满足x-2y=0,x 设Z=X+Y,其中X,Y满足X+2Y>=0,X-Y 当x,y满足条件|x|+|y| 当x,y满足条件|x|+|y| 已知x,y满足x+y-2>=0,2x-y+2>=0,x 设实数x,y满足 x>=0 x-2y>=0 x-y-2 已知x,y满足约束条件：x-y+1>=0,x+y-2>=0,x 设x,y满足约束条件x>=0 x>=y 2x-y 当x,y满足不等式组：x≥0；y≤x；2x+y-9≤0,目标函数z=x+3y的最大值为? y=-2/x 当x满足___时,-2小于y小于0? 变量x,y满足约束条件,x+y>=3,x-y>=-1,2x-y 设x,y满足约束条件x+y>=1,x-y>=-1,2x-y 设x,y满足约束条件x+y>=1,x-y>=-1,2x-y x,y 满足x(x-2)-y(y-6)=-10,求x,y的值