diff -r e75d3c993ed5 -r cef948318842 day1/session4.tex
--- a/day1/session4.tex	Mon Nov 16 12:03:49 2009 +0530
+++ b/day1/session4.tex	Fri Nov 20 00:05:50 2009 +0530
@@ -156,8 +156,8 @@
        [ 1.,  1.,  1.,  1.,  1.],
        [ 1.,  1.,  1.,  1.,  1.]])
 
-In []: ones_like([1, 2, 3, 4, 5]) 
-Out[]: array([1, 1, 1, 1, 1])   
+In []: ones_like([1, 2, 3, 4]) 
+Out[]: array([1, 1, 1, 1])   
 
 In []: identity(2)
 Out[]: 
@@ -515,6 +515,15 @@
   ....
 \end{lstlisting}
 \end{frame}
+
+\begin{frame}[fragile]
+\frametitle{Getting $L$ and $T^2$ \dots}
+\begin{lstlisting}
+In []: l = array(l)
+In []: t = array(t)
+\end{lstlisting}
+\alert{\typ{In []: tsq = t*t}}
+\end{frame}
  
 \begin{frame}[fragile]
 \frametitle{Generating $A$}
@@ -538,7 +547,7 @@
 \item Along with a lot of things, it returns the least squares solution
 \end{itemize}
 \begin{lstlisting}
-In []: result = lstsq(A,TSq)
+In []: result = lstsq(A,tsq)
 In []: coef = result[0]
 \end{lstlisting}
 \end{frame}