diff --git a/Homework/Week1/laff_dot.m b/Homework/Week1/laff_dot.m
new file mode 100644
index 0000000..ed2e712
--- /dev/null
+++ b/Homework/Week1/laff_dot.m
@@ -0,0 +1,50 @@
+## Copyright (C) 2018 julien Lengrand-Lambert
+## 
+## This program is free software; you can redistribute it and/or modify it
+## under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 3 of the License, or
+## (at your option) any later version.
+## 
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+## 
+## You should have received a copy of the GNU General Public License
+## along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+## Author: julien Lengrand-Lambert <jlengrand@juliens-MacBook-Pro.local>
+## Created: 2018-05-03
+function [ alpha ] = laff_dot (x, y)
+
+y_out = y;
+
+    function isVector = isVector(x)
+        isVector = (size(x, 1) == 1 || size(x, 2) == 1);
+    endfunction
+
+    function isCompatible = isCompatible(x, y)
+        isCompatible = (isequal(size(x), size(y)) || isequal(size(x), fliplr(size(y))));
+    endfunction
+
+    if !isVector(x)
+        disp('Error : x not a vector');
+        y_out = 'FAILED';
+        return 
+    end
+
+    if !isVector(y)
+        disp('Error : y not a vector');
+        y_out = 'FAILED';
+        return
+    end
+
+    if !isCompatible(x, y)
+        disp('Error : x and y are not compatible');
+        y_out = 'FAILED';
+        return
+    end
+
+    alpha = 1;
+    
+endfunction
\ No newline at end of file
diff --git a/Homework/Week1/test_dot.m b/Homework/Week1/test_dot.m
new file mode 100755
index 0000000..0f37a9e
--- /dev/null
+++ b/Homework/Week1/test_dot.m
@@ -0,0 +1,95 @@
+% Create some vectors
+x = [
+1
+2
+3
+]
+y = [
+0
+-1
+-2
+]
+z = [
+4
+3
+2
+1
+]
+
+% test dot product of column vector with column vector
+disp( 'dot product of column vector with column vector' )
+if ( isequal( laff_dot( x, y ), x' * y ) ) 
+    disp( 'TEST PASSED' )
+else
+    disp( 'TEST FAILED' )
+end
+
+disp( ' ' )
+
+% test dot product of column vector with row vector
+disp( 'dot product of column vector with row vector' )
+if ( isequal( laff_dot( x, y' ), x' * y ) ) 
+    disp( 'TEST PASSED' )
+else
+    disp( 'TEST FAILED' )
+end
+
+disp( ' ' )
+
+% test dot product of row vector with column vector
+disp( 'dot product of row vector with column vector' )
+if ( isequal( laff_dot( x', y ), x' * y ) ) 
+    disp( 'TEST PASSED' )
+else
+    disp( 'TEST FAILED' )
+end
+
+disp( ' ' )
+
+% test dot product of row vector with row vector
+disp( 'dot product of row vector with row vector' )
+if ( isequal( laff_dot( x', y' ), x' * y ) ) 
+    disp( 'TEST PASSED' )
+else
+    disp( 'TEST FAILED' )
+end
+
+disp( ' ' )
+
+% test dot product of column vector with column vector (wrong size)
+disp( 'dot product of column vector with column vector (wrong size)' )
+if ( isequal( laff_dot( x, z ), 'FAILED' ) ) 
+    disp( 'TEST PASSED' )
+else
+    disp( 'TEST FAILED' )
+end
+
+disp( ' ' )
+
+% test dot product of column vector with row vector (wrong size)
+disp( 'dot product of column vector with row vector (wrong size)' )
+if ( isequal( laff_dot( x, z' ), 'FAILED' ) ) 
+    disp( 'TEST PASSED' )
+else
+    disp( 'TEST FAILED' )
+end
+
+disp( ' ' )
+
+% test dot product of row vector with column vector (wrong size)
+disp( 'dot product of row vector with column vector (wrong size)' )
+if ( isequal( laff_dot( x', z ), 'FAILED' ) ) 
+    disp( 'TEST PASSED' )
+else
+    disp( 'TEST FAILED' )
+end
+
+disp( ' ' )
+
+% test dot product of row vector with row vector (wrong size)
+disp( 'dot product of row vector with row vector (wrong size)' )
+if ( isequal( laff_dot( x', z' ), 'FAILED' ) ) 
+    disp( 'TEST PASSED' )
+else
+    disp( 'TEST FAILED' )
+end
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..56e1f78
--- /dev/null
+++ b/README.md
@@ -0,0 +1,14 @@
+# LAFF: Linear Algebra - Foundations to Frontiers
+
+This repo contains code that is used to follow the [LAFF: Linear Algebra - Foundations to Frontiers](https://www.edx.org/course/laff-linear-algebra-foundations-to-frontiers) course on [edx](https://www.edx.org/).
+
+Most of the code is given at the beginning of the course. 
+
+The code I have written myself is located in the **Homework** folder.
+
+## Running things
+
+You will need [Matlab](https://matlab.mathworks.com/) or [Octave](https://octave.org/) to run things
+
+Personally, I used the Octave CLI and [Microsoft Code](https://code.visualstudio.com/) with the [Octave plugin](https://marketplace.visualstudio.com/items?itemName=toasty-technologies.octave).
+