From: W. Trevor King <wking@tremily.us>
Date: Wed, 25 Jul 2012 12:40:44 +0000 (-0400)
Subject: Fix subscripting (r_12 -> r_{12}) in Serway and Jewett v8's 25.21.
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=2987081fa75539cd4a45b632a264d2c320ec0698;p=course.git

Fix subscripting (r_12 -> r_{12}) in Serway and Jewett v8's 25.21.
---

diff --git a/latex/problems/Serway_and_Jewett_8/problem25.21.tex b/latex/problems/Serway_and_Jewett_8/problem25.21.tex
index 116769b..641ddd4 100644
--- a/latex/problems/Serway_and_Jewett_8/problem25.21.tex
+++ b/latex/problems/Serway_and_Jewett_8/problem25.21.tex
@@ -11,7 +11,7 @@ on the $y$ axis at $y=0.500\U{m}$.
 \begin{solution}
 \Part{a}
 \begin{equation}
-  V_3 = k_e \frac{q_1}{r_13} + k_e \frac{q_2}{r_12}
+  V_3 = k_e \frac{q_1}{r_{13}} + k_e \frac{q_2}{r_{12}}
     = 2 k_e \frac{2\U{$\mu$C}}{\sqrt{(1.00\U{m})^2 + (0.500\U{m})^2}}
     = \ans{32.2\U{kV}}
 \end{equation}