实数x,y满足x+y≤2,(x-1)²+(y-1)²≤2,则2x+y的取值范围是

实数x,y满足x+y≤2,(x-1)²+(y-1)²≤2,则2x+y的取值范围是 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? 设实数x,y满足y≥x+1,2x-4y-1≤0 ,2y+x-11≤0 则y²/x的取值范围是 若实数x、y满足条件x²-y²=1,则(1/x²)+(2y/x)的取值范围是? 实数x,y满足x+2y-1≤0,x≥0,y≥0,则绝对值2x+y-1的取值范围 若实数x,y满足2x*X+3y*y=1,S=3x*x-2y*y,则S的取值范围为 若实数x,y满足2x²+3y²=1,S=3x²-2y²,则S的取值范围是 若实数x，y满足x−y+1≤0x＞0y≤2，则yx的取值范围是（　　） 若实数X Y满足y=2x+1,且x小于等于2y大于等于3,则y/x的取值范围是 ? 设x、y满足约束条件｛x≥0 y≥x 4x+3y≤12｝则2y+3/x+1的取值范围是? 1.若实数X,Y满足不等式组 y≥0 x-y≤4 2x-y-2≥0,则W=(y-1)/(x+1)的取值范围是? 实数x,y满足不等式组y≥0,x-y≥0,2x-y-2≤0,则w=(y-1)/(x+1)的取值范围是?