# Linear Algebra question

1. Nov 9, 2005

### stunner5000pt

Use the $LDL^T$ factorization to solve the following linear system
$$\left(\begin{array}{cccc|1}4&1&-1&0&7\\1&3&-1&0&8\\-1&-1&5&2&-4\\0&0&2&4&6\end{array}\right)$$
now i know ihow to get a matrix in the form LDL^T. But i was wondering how one would go about solving from there?