few updates to first exercises, create script without solutions

header.tex

@@ -294,7 +294,7 @@
   chapterlistsgaps=on,
 ]{exercisef}
 \newboolean{showexercisesolutions}
-\setboolean{showexercisesolutions}{true}
+\setboolean{showexercisesolutions}{false}
 \newenvironment{exercise}[2]%
   { \newcommand{\exercisesource}{#1}%
     \newcommand{\exercisefile}{\protect\StrSubstitute{#1}{_}{\_}}%

programming/exercises/matrices.tex

@@ -14,7 +14,7 @@
 %%%%% text size %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \usepackage[left=20mm,right=20mm,top=25mm,bottom=25mm]{geometry}
 \pagestyle{headandfoot}
-\header{{\bfseries\large Exercise 3}}{{\bfseries\large Matrices}}{{\bfseries\large 23. Oktober, 2017}}
+\header{{\bfseries\large Exercise 3}}{{\bfseries\large Matrices}}{{\bfseries\large 22. Oktober, 2018}}
 \firstpagefooter{Dr. Jan Grewe}{Phone: 29 74588}{Email:
   jan.grewe@uni-tuebingen.de}
 \runningfooter{}{\thepage}{}

programming/exercises/variables_types.tex

@@ -1,4 +1,4 @@
-\documentclass[12pt,a4paper,pdftex, answers]{exam}
+\documentclass[12pt,a4paper,pdftex]{exam}
 
 \usepackage[german]{babel}
 \usepackage{natbib}
@@ -15,7 +15,7 @@
 %%%%% text size %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \usepackage[left=20mm,right=20mm,top=25mm,bottom=25mm]{geometry}
 \pagestyle{headandfoot}
-\header{{\bfseries\large Exercise 1}}{{\bfseries\large Variables und Datatypes}}{{\bfseries\large 17. Oktober, 2017}}
+\header{{\bfseries\large Exercise 1}}{{\bfseries\large Variables und Datatypes}}{{\bfseries\large 16. Oktober, 2018}}
 \firstpagefooter{Dr. Jan Grewe}{Phone: 29 74588}{Email:
   jan.grewe@uni-tuebingen.de}
 \runningfooter{}{\thepage}{}
@@ -37,18 +37,18 @@
   Neuroethology \hfill --- \hfill Institute for Neurobiology \hfill --- \hfill \includegraphics[width=0.28\textwidth]{UT_WBMW_Black_RGB} \\
 \end{center}
 
-The exercises are meant for self-monitoring, revision of the lecture
+The exercises are meant for self-monitoring and revision of the
-topic. You should try to solve them on your own. Your solution should
+lecture. You should try to solve them on your own. Your solution
-be submitted as a single script (m-file) in the Ilias system. Each
+should be submitted as a single script (m-file) in the Ilias
-task should be solved in its own ``cell''. Each cell must be
+system. Each task should be solved in its own ``cell''. Each cell must
-executable on its own. The file should be named according to the following pattern:
+be executable on its own. The file should be named according to the
-``variables\_datatypes\_\{lastname\}.m'' benannt werden
+following pattern: ``variables\_datatypes\_\{lastname\}.m''
-(e.g. variables\_datentypes\_mueller.m).
+(e.g. variables\_datatypes\_mueller.m).
 
 \begin{questions}
   \question Creating and deleting variables:
   \begin{parts}
-    \part Create two new variables  \code{a}, \code{b} and assign arbitrary values to them. End each command with a semicolon. Create a variable \code{c} that is empty.
+    \part Create two new variables  \code{a}, \code{b} and assign arbitrary values to them. End each command with a semicolon. Create a empty variable \code{c}.
     \begin{solution}
       \code{a = 1;} \code{b = 2;} \code{c = [];}
     \end{solution}
@@ -80,15 +80,15 @@ executable on its own. The file should be named according to the following patte
 
   \question Working with variables:
   \begin{parts}
-    \part Create two new variables  \code{a}, \code{b} and assign arbitrary numeric values.
+    \part Create two new variables  \code{a} and \code{b} and assign arbitrary numeric values.
     \begin{solution}
       \code{a = 5; b = 3.14;}
     \end{solution}
-    \part Add a number to \code{a} and \code{b}.
+    \part Add an arbitrary number to \code{a} and \code{b}.
     \begin{solution}
-      \code{a + 5} \code{b + 7.28}
+      \code{a + 5;} \code{b + 7.28;}
     \end{solution}
-    \part Add the variables themselves.
+    \part Add the variables \code{a} and \code{b}.
     \begin{solution}
       \code{a + b}
     \end{solution}
@@ -98,7 +98,7 @@ executable on its own. The file should be named according to the following patte
     \end{solution}
     \part Do \code{a} and \code{b} change?
     \begin{solution}
-      No, we make use of the stored values, the values remaing untouched.
+      No, we make use of the stored values, the variables remain untouched.
     \end{solution}
     \part Execute any arithmetic operation with \code{a} and \code{b} and store the result in a new variabel \code{x}.
     \begin{solution}
@@ -110,15 +110,18 @@ executable on its own. The file should be named according to the following patte
     \end{solution}
   \end{parts}
 
-  \question Calculate the faculty of 5:
+  \question Calculate the factorial of 5: The factorial of a number
+  $n$ is defined as the product of all integer numbers ranging from 1
+  to $n$.  $\displaystyle{n! = 1 \cdot 2 \cdot 3 \cdot ... n =
+    \prod_{k=1}^{n} k}$. We will calculate $5!$ in individual steps.
   \begin{parts}
     \part Create a variable \code{x} an assign the value 1.
-    \part In a first step multiply \code{x} with 2 and assign the result to \code{x} itself. 
+    \part In a first step multiply \code{x} with 2 and reassign the result to \code{x}.
     \part Proceed in a similar manner until x stores $5!$.
   \end{parts}
   \begin{solution}
-    \code{x = 1;} \\ \code{x = x * 2;}\\ \code{x = x * 3;} \\ \code{x = x * 4;} \\ \code{x = x * 5;}\\ \code{disp(x)}\\
+    \code{x = 1;} \\ \code{x = x * 2;}\\ \code{x = x * 3;} \\ \code{x
-    \code{  120}
+      = x * 4;} \\ \code{x = x * 5;}\\ \code{disp(x)}\\ \code{ 120}
   \end{solution}
 
   \question Create a variable and assign a string to it. What is the data type of that variable?
@@ -126,7 +129,7 @@ executable on its own. The file should be named according to the following patte
   \code{x = 'some text'}\\ \code{class(x)\\ char}
   \end{solution}
 
-  \question List the largest numbers that can stored in 8, 16, 32
+  \question List the largest numbers that can be stored in 8, 16, 32
   and 64 bit integer data types?
   \begin{solution}
     \verb+2^8 / 2 - 1+\\
@@ -143,13 +146,14 @@ executable on its own. The file should be named according to the following patte
     The int8 dtype can only store values between -128 and 127.
   \end{solution}
 
-  \question Explain the output of the follwoing commands: \code{int8(1024)} and \code{uint8(1024)}.
+  \question Explain the output of the following commands:
+  \code{int8(1024)} and \code{uint8(1024)}.
   \begin{solution}
     int8 can store values between -128 and 127. uint8 is
-    \textit{unsigned}, ist stores values between 0 and 255.
+    \textit{unsigned}, it stores values between 0 and 255.
   \end{solution}
 
-  \question Typeconversion:
+  \question Conversion of data types:
   \begin{parts}
     \part Execute: \code{x = 131.333}. What is the datatype of \code{x}?
     \begin{solution}
@@ -178,7 +182,7 @@ executable on its own. The file should be named according to the following patte
     \end{solution}
     \part Create a third variable \code{c} and assign \code{a+1e-16}. What is the result of \code{c-a}? Why?
     \begin{solution}
-      Result is 0! Also with doubles there is a limited precision in
+      Result is 0! Even with doubles there is a limited precision in
       the decimal part.
     \end{solution}
     \part Calculate \verb=(2^52 + 1) - 2^52= and
@@ -192,7 +196,7 @@ executable on its own. The file should be named according to the following patte
       Square root of something larger than 1 should not be 1 and thus
       the result must not be 0.
     \end{solution}
-    \part Compare wwith the result when adding a slightly largern number (e.g. 1e-8).
+    \part Try adding a slightly larger number (e.g. 1e-8). What happens?
     \begin{solution}
       Result is not equal to zero.
     \end{solution}

programming/exercises/vectors.tex

@@ -1,4 +1,4 @@
-\documentclass[12pt,a4paper,pdftex, answers]{exam}
+\documentclass[12pt,a4paper,pdftex]{exam}
 
 \usepackage[german]{babel}
 \usepackage{natbib}
@@ -14,7 +14,7 @@
 %%%%% text size %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \usepackage[left=20mm,right=20mm,top=25mm,bottom=25mm]{geometry}
 \pagestyle{headandfoot}
-\header{{\bfseries\large Exercise 2}}{{\bfseries\large Vectors}}{{\bfseries\large 18. Oktober, 2017}}
+\header{{\bfseries\large Exercise 2}}{{\bfseries\large Vectors}}{{\bfseries\large 17. Oktober, 2018}}
 \firstpagefooter{Dr. Jan Grewe}{Phone: 29 74588}{Email:
   jan.grewe@uni-tuebingen.de}
 \runningfooter{}{\thepage}{}
@@ -36,16 +36,16 @@
          Neuroethology \hfill --- \hfill Institute for Neurobiology \hfill --- \hfill \includegraphics[width=0.28\textwidth]{UT_WBMW_Black_RGB} \\
 \end{center}
 
-The exercises are meant for self-monitoring and revision of the lecture
+The exercises are meant for self-monitoring and revision of the
-topic. You should try to solve them on your own. Your solution should
+lecture. You should try to solve them on your own. Your solution
-be submitted as a single script (m-file) in the Ilias system. Each
+should be submitted as a single script (m-file) in the Ilias
-task should be solved in its own ``cell''. Each cell must be
+system. Each task should be solved in its own ``cell''. Each cell must
-executable on its own. The file should be named according to the following pattern:
+be executable on its own. The file should be named according to the
-``variables\_datatypes\_\{lastname\}.m'' benannt werden
+following pattern: ``variables\_datatypes\_\{lastname\}.m''
-(e.g. variables\_datentypes\_mueller.m).
+(e.g. vectors\_mueller.m).
 
 \begin{questions}
-  \question Create vector with the following contents:
+  \question Create vectors with the following contents:
   \begin{parts}
     \part Integer numbers ranging from 1 to 10.
     \begin{solution}
@@ -74,7 +74,7 @@ executable on its own. The file should be named according to the following patte
     \end{solution}
   \end{parts}
 
-  \question Calculations with vectors:
+  \question Calculating with vectors:
   \begin{parts}
     \part Create a vector \code{x = [3 2 6 8];}
     \part What is the size of this vector? Use the functions \code{size} and \code{length}. What is the difference between them?
@@ -90,7 +90,7 @@ executable on its own. The file should be named according to the following patte
     \begin{solution}
       \code{disp(x + 5)}
     \end{solution}
-    \part Multiply each element of \code{x} with 2;
+    \part Multiply each element of \code{x} by 2;
     \begin{solution}
       \code{disp(x * 2)}
     \end{solution}
@@ -189,7 +189,7 @@ executable on its own. The file should be named according to the following patte
     \end{solution}
   \end{parts}
 
-  \question Store some text in a valriable. The text should consist of at least two words (e.g. \code{x = 'some
+  \question Store some text in a variable. The text should consist of at least two words (e.g. \code{x = 'some
     text'}). Use indexing to print out the words individually.
   \begin{solution}
     \code{x = 'some text'; \\ disp(x(1:4))\\disp(x(6:end))}