adc12012 · adc12012 · Feb 15, 2017 · Feb 14, 2017 · Feb 14, 2017
diff --git a/README.md b/README.md
@@ -74,8 +74,8 @@ general, I will not post homework solutions.
 |3|1/31||Consistent Coding habits|
 |   |2/2|5|Root Finding| 
 |4|2/7|6|Root Finding con’d|      
-|   |2/9|7|Optimization|      
-|5|2/14||Intro to Linear Algebra|
+|   |2/9|7| **Snow Day**|      
+|5|2/14|| Optimization |
 |   |2/16|8|Linear Algebra|
 |6|2/21|9|Linear systems: Gauss elimination|
 |   |2/23|10|Linear Systems: LU factorization|

diff --git a/lecture_08/Auchain_model.png b/lecture_08/Auchain_model.png
diff --git a/lecture_08/goldmin.m b/lecture_08/goldmin.m
@@ -33,4 +33,4 @@
   if xopt~=0, ea = (2 - phi) * abs((xu - xl) / xopt) * 100;end
   if ea <= es | iter >= maxit,break,end
 end
-x=xopt;fx=f(xopt,varargin{:});
+x=xopt;fx=f(xopt,varargin{:});
diff --git a/lecture_08/lecture_08.ipynb b/lecture_08/lecture_08.ipynb
diff --git a/lecture_08/lecture_08.md b/lecture_08/lecture_08.md
@@ -19,7 +19,7 @@ Considering a 1-D gold chain, we can calculate the bond length, $x_{b}$, with no
 Computational Tools to Study and Predict the Long-Term Stability of Nanowires.
 By Martin E. Zoloff Michoff, Patricio Vélez, Sergio A. Dassie and Ezequiel P. M. Leiva 
 
-![Model of Gold chain, from molecular dynamics simulation](Auchain_model.gif)
+![Model of Gold chain, from molecular dynamics simulation](Auchain_model.png)
 
 [Single atom gold chain mechanics](http://www.uam.es/personal_pdi/ciencias/agrait/)
 

diff --git a/lecture_08/lecture_08.pdf b/lecture_08/lecture_08.pdf
diff --git a/lecture_08/octave-workspace b/lecture_08/octave-workspace