实数xy满足1< x3/y

实数xy满足1< x3/y 实数xy满足y>=1 y 若实数xy满足x-y+1 已知实数xy满足x+2y 已知实数xy满足 x+y-2 已知实数x、y满足xy>0,且8/xy+1/x+1/y=1, 已知实数xy满足x²﹢y²-xy+2x-y+1=0求xy 实数x,y满足x^3-y^3-3xy=1,则x-y= 当x,y为实数,且x+y=1时,x3+y3-xy的值是非负数. 已知实数xy满足x/y=x-y,且y>1,则实数x的取值范围是 已知实数xy满足 4x+y-9>=0 x-y-1 若实数x,y满足x2+y2+xy=1,则x+y的最大值是 若实数x,y满足x2+y2+xy=1,则x+y的最大值是 若实数x,y满足x+9y=1,则xy的最大值 若实数xy满足x-y+10,y 如果实数x,y满足x^2+y^2=1,则(1+xy)(1-xy)有高一必修1内容 已知实数x,y满足x^2+y^2=1 求(1-xy)(1+xy)的最大值和最小值 实数x,y满足x^2+y^2=1,则(1+xy)(1-xy)的最大最小值为