From af054ef30a72de36df80bf21e974696ce17116a1 Mon Sep 17 00:00:00 2001
From: siveshs <siveshs@gmail.com>
Date: Sat, 3 Jul 2010 04:26:58 +0000
Subject: section 3 editing

---
 Fourier Series.page | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Fourier Series.page b/Fourier Series.page
index fef0cc2..d53530c 100644
--- a/Fourier Series.page	
+++ b/Fourier Series.page	
@@ -125,7 +125,7 @@ $$
 & = & \frac{1}{2\pi} \, \int_0^{2\pi} \, e^{i(n-m)x} \, dx \\
 \end{array}
 $$  
-Here,  
+The exponential can be expanded using $e^{inx} = \cos nx + i \sin nx$. Then, integrating, we get the following:    
 $$
 \begin{array}{ccl}
 n = m \Rightarrow (f_n,f_m) & = & 1\\
-- 
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