[spec] start vector calculus

diff --git a/methods/inverse-functions.md b/methods/inverse-functions.md
index 8b4de947cb5835cdcef1027d39a3400346251c08..ee98763041bed81da88cdf4a5e2d6447c322709d 100644 (file)
--- a/methods/inverse-functions.md
+++ b/methods/inverse-functions.md
@@ -1,5 +1,5 @@
 ---
-geometry: margin=2cm
+geometry: a4paper, margin=2cm
 author: Andrew Lorimer
 header-includes:
 - \usepackage{setspace}