From 28664215e8deddbf844433ea128c8fb67b2c58f9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gi=C3=B9=20Marcer?= <giuliamarcer@yahoo.it>
Date: Sat, 30 May 2020 18:41:20 +0200
Subject: [PATCH] ex-4: change the order of the entries of the definition of
 atan()

---
 notes/sections/4.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/notes/sections/4.md b/notes/sections/4.md
index db38cfd..2852479 100644
--- a/notes/sections/4.md
+++ b/notes/sections/4.md
@@ -100,8 +100,8 @@ where:
 $$
 \begin{cases}
   \arctan(P_h/P_v) &\incase P_v > 0 \\
-  \arctan(P_h/P_v) + \pi &\incase P_v < 0 \\
-  \pi/2 &\incase P_v = 0
+  \pi/2 &\incase P_v = 0            \\
+  \arctan(P_h/P_v) + \pi &\incase P_v < 0
 \end{cases}
 $$