add factorising notes for methods

diff --git a/methods/antidiff.md b/methods/antidiff.md
index b564ad3fc5a207a64bb9bcf15b86826c19bbf6ce..778f31e94535524a4920929d9761595200f87735 100644 (file)
--- a/methods/antidiff.md
+++ b/methods/antidiff.md
@@ -1,3 +1,11 @@
+---
+geometry: margin=2cm
+<!-- columns: 2 -->
+graphics: yes
+tables: yes
+author: Andrew Lorimer
+---
+
 # Antidifferentiation
 
 If $F'(x)=f(x)$, then $\int f(x) \cdot dx = F(x) + c$