From 4f4c8a1d598cb82b5accf158fb6e1a382fb2a687 Mon Sep 17 00:00:00 2001
From: joshuab <>
Date: Fri, 2 Jul 2010 16:47:07 +0000
Subject: Swapped in \cdot for .

---
 Fourier Series.page | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'Fourier Series.page')

diff --git a/Fourier Series.page b/Fourier Series.page
index 91bad7a..3ede531 100644
--- a/Fourier Series.page	
+++ b/Fourier Series.page	
@@ -15,7 +15,7 @@ Rearranging,
   
 $\qquad\sin^2(x) = \frac{1-\cos(2x)}{2}$  
   
-$2.\quad\sin(2x).\cos(2x) =  ?$  
+$2.\quad\sin(2x)\cdot\cos(2x) =  ?$  
    
 Based on the double angle formula,  
   
@@ -23,7 +23,7 @@ $\qquad\sin(2x) = 2\sin(x)\cos(x)$
   
 Rearranging,
 $$\begin{array}{ccl} 
-\sin(2x).\cos(x) & = & [2\sin(x)\cos(x)].\cos(x)\\
+\sin(2x)\cdot\cos(x) & = & [2\sin(x)\cos(x)]\cdot\cos(x)\\
  & = & 2 \sin(x) [ 1 - \sin^2(x)]\\
  & = & 2\sin(x) - 2\sin^3(x)\\
 \end{array}$$
@@ -53,6 +53,7 @@ $$
 e^{i\theta} & = & \cos \theta + i \sin \theta\\
 \end{array}
 $$
+
 ##What is the Fourier series actually?</b>
 
 ##Why is Fourier series useful? </b>
-- 
cgit v1.2.3