cleaned up and finished 1-3

[ar1516.git] / a2 / pre.tex

diff --git a/a2/pre.tex b/a2/pre.tex
index 588df3a..df89a95 100644 (file)
--- a/a2/pre.tex
+++ b/a2/pre.tex
@@ -2,6 +2,7 @@
 
 \usepackage{a4wide}
 \usepackage{amsmath}
+\usepackage{array}
 \usepackage{booktabs}
 \usepackage{enumerate}
 \usepackage{float}