已知实数x,y满足y=-2x+8,且2≤x≤3,求y/x的最大值和最小值.

已知实数x,y满足y=-2x+8,且2≤x≤3,求y/x的最大值和最小值. 已知实数x,y满足|2x+y+1|≤|x+2y+2|,且-1≤y≤1,则z=2x+y的最大值 已知实数x,y满足|2x+y+1|≤|x+2y+2|,且-1≤y≤1,则z=2x+y的最大值 已知x,y均为实数,且满足x(y+1)+y=8,x^2y+xy^2=12,则x分之一+y分之一=? 已知实数x,y满足x^2+y=0,且0 已知X,Y为实数,且满足2X^2+4XY+4Y^2+8X+12Y+10=0,求x+y的值. 已知实数X,Y满足2 已知实数xy满足x+2y 已知实数xy满足 x+y-2 已知非负实数x,y满足2x+3y-8≤0且3x+2y-7≤0,则x+y的最大值是?已知非负实数x,y满足2x+3y-8≤0且3x+2y-7≤0,则x+y的最大值是? 已知实数X,Y,Z,满足X^2-2X+Y=Z-1,且X+Y^2+1=0,试比较X,Y,Z的大小. 已知实数x、y满足xy>0,且8/xy+1/x+1/y=1, 已知x,y满足不等式x-y≤0 x+y≤4 x≥a且y=2x-y的最大值与最小值大3求实数a的值应该是Z=2x-y 已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y 已知x、y均为实数,且满足xy+x+y=17,x^2y+y^2x=66,求x^4+x^3y+x^2*y^2+y^3x+y^4的值 已知实数x.y满足(x+2)^2+y^2( 已知xy为实数,且满足2x^2+4xy+4y^2+8x+12y+10=0,试求x+y的值如题. 已知xy为实数,且满足4x^2+8x-(y-1)根号1-y+4=0,那么x^2013-y^2013