From 8e4e0fdfc75d0ec14fe857e7d84e99cfae82714f Mon Sep 17 00:00:00 2001 From: siveshs Date: Fri, 2 Jul 2010 03:42:29 +0000 Subject: still testing --- Fourier Series.page | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/Fourier Series.page b/Fourier Series.page index c34281d..4cf9014 100644 --- a/Fourier Series.page +++ b/Fourier Series.page @@ -5,9 +5,10 @@ We first begin with a few basic identities on the size of sets. Show that the se ##Why Fourier series is plausible? 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: -$\qquad1.\quad\sin^2(x) = ?$ +$1.\quad\sin^2(x) = ?$ -Based on the double angle formula, $\cos(2x) = 1 - 2 \sin^2(x)$ +Based on the double angle formula, +$\cos(2x) = 1 - 2 \sin^2(x)$ Rearranging, -- cgit v1.2.3