若实数x,y满足x−y+1≤0x>0则yx−1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x−y+1≤0x>0则yx−1的取值范围是( )
已知实数x,y满足方程x2+y2-4x+1=0,则yx+1的取值范围是( )
若实数x,y满足{x-y+1≥,x>0},则y/(x-1)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?
已知实数 x,y 满足方程x2+y2-4x+1=0,则yx的取值范围 ___ .
(2014•新余二模)设实数x,y满足约束条件x−y−2≤0x+2y−5≥0y≤2,则u=2x+yx+2y的取值范围是(
若实数x,y满足x+y+1≤0,x≥0.则y/(x-1)的取值范围
设实数x,y满足约束条件x≥1且x≠2y≥1x+2y−5≤0,则z=x+y−1x−2的取值范围为( )
在方程组2x−y=m2y−x=1中,x、y满足x+y>0,则m的取值范围是( )
已知实数xy满足x/y=x-y,且y>1,则实数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