\documentclass{minimal}
% File: householders.tex
% Info: Display how the Householder's Method for finding roots works.
% Date: 3 March 2013
\usepackage{amsmath}
\begin{document}

\begin{equation*}
x_{n+1} = x_n + d\; \frac{\left(1/f\right)^{(d-1)}(x_n)}{\left(1/f\right)^{(d)}(x_n)}
\end{equation*}

\end{document}
