设m为实数,若{(x,y)|(x-2y+5≥0)并(3-x≥0)并(mx+y≥0)}含于{(x,y)|x²+y
设m为实数,若{(x,y)|x−2y+5≥03−x≥0mx+y≥0⊆{(x,y)|x
设实数x、y满足不等式组x+2y-5>02x+y-7>0x≥0,y≥0,若x、y为整数,则3x+4y的最小值是( )
设实数x,y满足不等式组3y-x≥0,y+2x+a≥0,y-2x-2≤0,若x²+y²的最小值为5,
设实数x,y满足条件x≥0x≤yx+2y≤3
若实数x、y,满足x≥0y≥04x+3y≤12
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
已知实数x,y满足x+2y-2≥0,x+6y-3≥0,y≥0,x≥0,求下列各式的最小值并指出取最小值时x,y的值.(1
设实数X ,Y 是不等式组 X+2Y-5>0,2X+Y-7>0,X>=0,Y>=0 ,若 X、Y 为整数,则3X+4Y的
若实数X,Y满足不等式组y≤2,x-y≥0,x-2y≤0.则z=x+y的最大值为
若实数xy满足不等式组x-2y≥0,x+y-3≥0,x-y-3≤0,则2x-y的最小值为?
设实数x,y满足约束条件x-y+2≥0x+y-4≥02x-y-5≤0
设实数x,y满足不等式组y+x≤1y-x≤1y≥0