(2014•葫芦岛二模)若实数x、y满足2x+y>22y−x≤44x−3y≤4,则2x-3y的最值情况是( )
(2014•葫芦岛二模)若实数x、y满足2x+y>22y−x≤44x−3y≤4,则2x-3y的最值情况是( )
(2013•温州二模)若实数x,y满足不等式组x+2y≥22x+y≤4x−y≥−1,则3|x-1|+y的最大值是( )
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
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( )
若实数x,y满足x−y+1≤0x>0y≤2,则yx的取值范围是( )
(2013•烟台一模)已知实数x,y满足不等式组2x−y≥0x+2y≥03x+y−5≤0,则2x+y的最大值是( )
实数X.Y满足X*X+Y*Y-2X-2Y+1=0,则(Y-4)/(X-2)的取值范围是?
若实数x,y满足不等式组x+2y−4≥02x−y−3≥0x−y≥0则x+y的最小值是( )
已知实数x,y满足2x+y−2≥0x−2y+4≥03x−y−3≤0则x
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>0,y>0,且2x-y≤0,x-3y+5≥0,则z=(1/4)^x(1/2)^y的取值范围
若实数x,y满足x的平方+y的平方-4x-2y+5=0,则(x+y)/2x-3=