A simple approximation to the square root of a number x in the interval [1/16, 1) is the function                           y0(x) = XXXXXXXXXX − XXXXXXXXXX/ XXXXXXXXXXx). Find the relative error of y0...

A simple approximation to the square root of a number x in the interval [1/16, 1) is the function

                          y0(x) = 1.681595 − 1.288973/(0.8408065 + x).

Find the relative error of y0 by finding the extreme points of y0(x) − √x  √x or the extreme points of  y0 − √x 2 /x.