If x1,x2,x3,x4 are four positive real numbers such that x1+1x2=4, x2+1x3=1, x3+1x4=4 and x4+1x1=1, then

If x1,x2,x3,x4 are four positive real numbers such that x1+1x2=4, x2+1

1.	If x1,x2,x3,x4 are four positive real numbers such that x1+1x2=4, x2+1x3=1, x3+1x4=4 and x4+1x1=1, then
Answer» If $x_{1}, x_{2}, x_{3}, x_{4}$ are four positive real numbers such that $x_{1} + \frac{1}{x_{2}} = 4, x_{2} + \frac{1}{x_{3}} = 1, x_{3} + \frac{1}{x_{4}} = 4$ and $x_{4} + \frac{1}{x_{1}} = 1,$ then