1 files changed, 27 insertions, 0 deletions

diff --git a/src/Lecture2/live/commands.tex b/src/Lecture2/live/commands.tex
new file mode 100644
index 0000000..25a0a78
--- /dev/null
+++ b/src/Lecture2/live/commands.tex
@@ -0,0 +1,27 @@
+\documentclass[10pt,a5paper]{article}
+\usepackage[utf8]{inputenc}
+\usepackage{amsmath}
+\usepackage{amsfonts}
+\usepackage{amssymb}
+\usepackage[left=2cm,right=2cm,top=2cm,bottom=2cm]{geometry}
+
+
+\newcommand{\myvec}[2]{({#1}_1,{#1}_2,\dots,{#1}_{#2})}
+\newcommand{\myvecn}[1]{\myvec{#1}{n}}
+
+\newcommand{\myvecopt}[2][n]{({#2}_1,{#2}_2,\dots,{#2}_{#1})}
+\providecommand{\vec}[1]{\overleftarrow{#1}}
+
+\begin{document}
+
+\[
+        \vec{v}=\myvecopt{v} 
+\]
+
+later...
+
+\[
+        \vec{w}=\myvecopt[10]{w}
+\]
+
+\end{document}
\ No newline at end of file