From 21cf519e7d527c71d771b7e8d56cb8b5c46b0bf3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kevin=20H=C3=B6llring?= <kevin.hoellring@fau.de>
Date: Tue, 26 Nov 2019 03:25:06 +0100
Subject: [PATCH] Fix sign error
---
instructions/exercise_4.tex | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/instructions/exercise_4.tex b/instructions/exercise_4.tex
index 543fdf4..901bbe1 100644
--- a/instructions/exercise_4.tex
+++ b/instructions/exercise_4.tex
@@ -229,7 +229,7 @@ in your command line/shell before executing your program.
\item Calculate the Hesse matrix once and store its value:
$$H_k= \nabla^2f(x_k)$$
\item Calculate the step size:
- $$\alpha_k = \frac{\left\langle g_k, d_k\right\rangle}{\left\langle d_k, H_k \cdot d_k\right\rangle}$$
+ $$\alpha_k = -\frac{\left\langle g_k, d_k\right\rangle}{\left\langle d_k, H_k \cdot d_k\right\rangle}$$
\item Update the current position:
$$x_{k+1} = x_k +\alpha_k \cdot d_k$$
\item Calculate the next gradient:
--
GitLab