From a609fe1b185129e30259bc76972250e8529fa1d0 Mon Sep 17 00:00:00 2001
From: pfatheddin <156558883+pfatheddin@users.noreply.github.com>
Date: Mon, 25 Mar 2024 20:01:48 -0400
Subject: [PATCH] Update singVarCalcOptimization13.tex

https://ximera.osu.edu/mooculus/optimization/exercises/exerciseList/optimization/exercises/singVarCalcOptimization13

The answer for A(10/(4+pi)) was not correct.
---
 optimization/exercises/singVarCalcOptimization13.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/optimization/exercises/singVarCalcOptimization13.tex b/optimization/exercises/singVarCalcOptimization13.tex
index 7a0a3a6b5..5e7f7de5a 100644
--- a/optimization/exercises/singVarCalcOptimization13.tex
+++ b/optimization/exercises/singVarCalcOptimization13.tex
@@ -75,7 +75,7 @@
                                 
                                 $A\left(\frac{10}{2+\pi}\right)=\frac{50\pi}{(2+\pi)^2}$
                                 
-                                $A\left(\frac{\answer{10}}{4+\pi}\right)=\frac{\answer{50}}{4+\pi}\approx 7$
+                                $A\left(\frac{\answer{10}}{4+\pi}\right)=\frac{\answer{200+350\pi}}{(4+\pi)^2}\approx 7$
                                 
                                 This seems complicated. It is better to argue that the derivative