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authorOpheliar99 <>2010-07-04 04:30:07 +0000
committerbnewbold <bnewbold@adelie.robocracy.org>2010-07-04 04:30:07 +0000
commit778d0aeb6e80b1653f0fcf042d76711fd4d49a0d (patch)
tree903bae6f49ec854ddc1ec296a1f438b70df5c10a
parent58faa9b3a55c388ea876158176de46d1b154b0d0 (diff)
downloadafterklein-wiki-778d0aeb6e80b1653f0fcf042d76711fd4d49a0d.tar.gz
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posted solutions of 2 and 3 in pset2
-rw-r--r--Problem Set 2.page1
1 files changed, 1 insertions, 0 deletions
diff --git a/Problem Set 2.page b/Problem Set 2.page
index de38296..ed138ec 100644
--- a/Problem Set 2.page
+++ b/Problem Set 2.page
@@ -44,6 +44,7 @@ $\sin x = \frac{e^{ix}-e^{-ix}}{2}$,
$\sin^4 x = \frac{{( e^{ix}-e^{-ix} )}^4}{16}$
$= \frac{e^{i 4x}+e^{-i 4x}-4 e^{i 2x} -4 e^{-i 2x}+6}{16}$.
+\\
If we express any periodic function $f(x)$ as
$f(x) = \sum a_n f_n(x)$, where $f_n(x) = \frac{e^{inx}}{\sqrt{2\pi}}$ and $f_0(x) = \frac{1}{\sqrt{2\pi}}$,