若实数x,y满足x-y+1≤0,且x>0,则y/x的取值范围是?(请用线性规划解,
若实数x,y满足{x-y+1≥,x>0},则y/(x-1)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
如果实数x,y满足x+3y-3≤0,x≥0,y≥0,那么z=(x+y-6)/(x-4)的取值范围是 线性规划啊
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y=2x+1,且x小于等于2y大于等于3,则y/x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( )
已知实数x,y满足x平方加y平方等于3且y大于等于0,若m=y+1/x+3,b=2x+y,则m,b的取值范围是?
已知实数x,y满足x-y+2≥0且x+y-1≤0且x+2y+2≥0,则2x+y的取值范围为
若实数x,y满足x^2+y^2-6x-4y+12=0,则x^2+y^2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
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
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