Fixed minor bug

145.tex

@@ -518,7 +518,7 @@ \subsection{Solving Homogeneous Linear Equation Systems}
 \subsubsection{The Minus-1 Trick}
 \begin{enumerate}
 \item Use Guassian elimination to reach reduced row echelon form. 
-\item Extend the matrix from 1 by adding rows of the form $\left[0\:\dots\:0\;1\;0\;\dots\;0\right]$
+\item Extend the matrix from 1 by adding rows of the form $\left[0\:\dots\:0\;-1\;0\;\dots\;0\right]$
 such that the leading diagonal is made up entirely of 1 (pivots) or
 -1 (from the introduced rows). 
 \item The columns containing -1 in the diagonal form the solutions.