线性规划方面的实数xy满足下面的不等式y>=0 x-y>=0 2x-y-2>=0,则y-1/x+1的取值范围是 答案是1
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满足不等式x+3y-3=0,y>.=0,则ω=y-1/x+1的取值范围是
实数x,y满足不等式组y大于等于0,x-y大于等于0,2x-y-2大于等于0,则k=y-1除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?
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?
设实数XY满足x^2+(y-1)^2=1若对满足条件xy不等式y/(x-3)+c≥0恒成立,则c的取值范围是( )
若实数xy满足(x+y+2)(x+y-1)=0,则x+y的值是
若正数x,y满足x+4y=xy,那么使不等式x+y-m>0恒成立的实数m的取值范围是
(2008•杭州一模)设实数x,y满足x2+2xy-1=0,则x+y的取值范围是______.
设实数x,y满足x2+2xy-1=0,则x+y的取值范围是______.
线性规划:已知变量xy满足约束条件X≥0 Y≥X 3X+4Y-12≤0,则S=X+2Y+3/X+1的取值范围?