\documentclass[a4paper,12pt]{scrartcl}
\usepackage[ngerman]{babel}
\usepackage{graphicx} %BIlder einbinden
\usepackage{amsmath} %erweiterte Mathe-Zeichen
\usepackage{amsfonts} %weitere fonts
\usepackage[utf8]{inputenc} %Umlaute & Co
\usepackage{hyperref} %Links
\usepackage{ifthen} %ifthenelse
\usepackage{enumerate}
\usepackage{listings}
\lstset{language=Python}

\usepackage{algpseudocode} %Pseudocode
\usepackage{dsfont} % schöne Zahlenräumezeichen
\usepackage{amssymb, amsthm} %noch stärker erweiterte Mathe-Zeichen
\usepackage{tikz} %TikZ ist kein Zeichenprogramm
\usetikzlibrary{trees,automata,arrows,shapes}

\pagestyle{empty}


\topmargin-50pt

\newcounter{aufgabe}
\def\tand{&}

\newcommand{\makeTableLine}[2][0]{%
  \setcounter{aufgabe}{1}%
  \whiledo{\value{aufgabe} < #1}%
  {%
    #2\tand\stepcounter{aufgabe}%
  }
}

\newcommand{\aufgTable}[1]{
  \def\spalten{\numexpr #1 + 1 \relax}
  \begin{tabular}{|*{\spalten}{p{1cm}|}}
    \makeTableLine[\spalten]{A\theaufgabe}$\Sigma$~~\\ \hline
    \rule{0pt}{15pt}\makeTableLine[\spalten]{}\\
  \end{tabular}
}

\def\header#1#2#3#4#5#6#7{\pagestyle{empty}
\begin{minipage}[t]{0.47\textwidth}
\begin{flushleft}
{\bf #4}\\
#5
\end{flushleft}
\end{minipage}
\begin{minipage}[t]{0.5\textwidth}
\begin{flushright}
#6 \vspace{0.5cm}\\
%                 Number of Columns    Definition of Columns      second empty line
% \begin{tabular}{|*{5}{C{1cm}|}}\hline A1&A2&A3&A4&$\Sigma$\\\hline&&&&\\\hline\end{tabular}\\\vspace*{0.1cm}
\aufgTable{#7}
\end{flushright}
\end{minipage}
\vspace{1cm}
\begin{center}
{\Large\bf Sheet #1}

{(Hand in #3)}
\end{center}
}



%counts the exercisenumber
\newcounter{n}

%Kommando für Aufgaben
%\Aufgabe{AufgTitel}{Punktezahl}
\newcommand{\Aufgabe}[2]{\stepcounter{n}
    \textbf{Exercise \arabic{n}: #1} (#2 Points)}


\begin{document}
    %\header{BlattNr}{Tutor}{Abgabedatum}{Vorlesungsname}{Namen}{Semester}{Anzahl Aufgaben}
    \header{9}{}{2015-07-09}{Intelligent Systems I}{\textit{Maximus Mutschler}\\ \textit{Jan-Peter Hohloch}
    }{SS 15}{2}
    \vspace{1cm}
    \Aufgabe{Independence}{50}\\
        \includegraphics[width=0.49\textwidth]{regression.png}
        \includegraphics[width=0.49\textwidth]{residuals.png}\\
        %TODO
        TODO: why are they not independent
    \Aufgabe{Kernels}{50}
        \begin{enumerate}
            \item $k(x_1,x_2)=C=\sqrt{C}^2\cdot k'(x_1,x_2)$, where $k'(x_1,x_2)=1$ which is clearly positive semidefinite.
            \item is p.d. according to the lecture, because it's a polynomial kernel
            \item TODO: don't see why not in the hint-case
            \item As 2. is a kernel, this is too with $\alpha=\sqrt{5}$
            \item As $k_1(x_1,x_2)=x_1^Tx_2$ and $k_2(x_1,x_2)=1$ are kernels, their sum is too. Now we multiply the sum of this kernels with itself and get another kernel.
        \end{enumerate}
\end{document}