From 2244db2d573301f10baaa36b81a5892087613ffd Mon Sep 17 00:00:00 2001
From: siveshs <siveshs@gmail.com>
Date: Fri, 2 Jul 2010 03:26:16 +0000
Subject: still testing

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

diff --git a/Fourier Series.page b/Fourier Series.page
index fb9ed7e..efa2b85 100644
--- a/Fourier Series.page	
+++ b/Fourier Series.page	
@@ -5,8 +5,9 @@ We first begin with a few basic identities on the size of sets. Show that the se
 ##Why Fourier series is plausible?</b>
 To show that Fourier series is plausible, let us consider some arbitrary trignometric functions and see if it is possible to express them as the sum of sines and cosines:  
 
-$$\begin{array}{ccl} 
+$$
 \sin^2(x) & = & ?\\
+\begin{array}{ccl} 
  & = & 1+iy-\frac{y^{2}}{2!}-i\frac{y^{3}}{3!}+\frac{y^{4}}{4!}+i\frac{y^{5}}{5!}+\cdots\\
  & = & (1-\frac{y^{2}}{2!}+\frac{y^{4}}{4!}+\cdots)+i(y-\frac{y^{3}}{3!}+\frac{y^{5}}{5!}-\cdots)\\
  & = & \cos y+i\sin y\end{array}$$
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