Fix typo \l -> \; in Serway and Jewett v8's problem 24.31.

diff --git a/latex/problems/Serway_and_Jewett_8/problem24.31.tex b/latex/problems/Serway_and_Jewett_8/problem24.31.tex
index 7f75ff2bb22fba9aa4292f52ec2c93842d4f42a1..4fb39deb88bfeb3304ba27d7ee7bbfa64b416672 100644 (file)
--- a/latex/problems/Serway_and_Jewett_8/problem24.31.tex
+++ b/latex/problems/Serway_and_Jewett_8/problem24.31.tex
@@ -20,7 +20,7 @@ The charge density inside the sphere is
 
 Inside the sphere, the enclosed charge is
 \begin{equation}
-  q_\text{in} = \rho V(r) = \frac{Qr^3}{R^3} \l.
+  q_\text{in} = \rho V(r) = \frac{Qr^3}{R^3} \;.
 \end{equation}
 
 By Gauss's law, the electric flux is