9709 P33 - Jun 2010 - Q6
1836
The curve \(y = \frac{\ln x}{x + 1}\) has one stationary point.
(i) Show that the \(x\)-coordinate of this point satisfies the equation \(x = \frac{x + 1}{\ln x}\), and that this \(x\)-coordinate lies between 3 and 4.
(ii) Use the iterative formula \(x_{n+1} = \frac{x_n + 1}{\ln x_n}\) to determine the \(x\)-coordinate correct to 2 decimal places. Give the result of each iteration to 4 decimal places.
