From 300fc6a5d057f6cc642ff3f3131952e6a45828c2 Mon Sep 17 00:00:00 2001 From: Opheliar99 <> Date: Sun, 4 Jul 2010 02:17:53 +0000 Subject: posted solutions of 2 and 3 in pset2 --- Problem Set 2.page | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Problem Set 2.page b/Problem Set 2.page index 329265b..518dccb 100644 --- a/Problem Set 2.page +++ b/Problem Set 2.page @@ -39,7 +39,7 @@ $\int_0^{2\pi} |\sin^2(x)|^2 dx = \sum |a_n|^2.$ # Solutions 2. Since -$\sin(x) = \frac{e^{ix}-e^{-ix}}{2}$, +$\sin(x) = \frac{\exp^{ix}-e^{-ix}}{2}$, $\int_0^{2\pi} \sin^4(x) dx = \frac{{e^{ix}-e^{-ix}}^4}{16}$, $ = \frac{e^{i 4x}+e^{-i 4x}-4 e^{i 2x} -4 e^{-i 2x}+6}{16}$ -- cgit v1.2.3