commit d30e11af690c0dedc3b4e0eec48e10f79fd85ce3
Author: Catarina Gamelas <catgam@st.amu.edu.pt>
Date:   Tue Oct 23 18:12:42 2018 +0200

    exercise

diff --git a/exercise-02-plik.pdf b/exercise-02-plik.pdf
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+\documentclass{article}
+\usepackage[utf8]{inputenc}
+\usepackage{polski}
+\usepackage{amsmath}
+\newtheorem{thm}{Theorem}
+\newtheorem{df}{Defenition}
+\begin{document}
+
+\begin{enumerate}
+\item Properly typeset the following command and properly refere to it in the text
+\begin{align*}
+&(\sum_{i_1,\dots,i_m} a_{i_1,\dots,i_m} ^{2m}{m+1} ^{\frac{m+1}{2m}} \leq \\
+ & \qquad \leq C \sup\left\{ | \sum_{i_1,\dots, i_m} a_{i_1,\dots,i_m} x^1_{i_1}\dots x^m_{i_m}|:
+  \|(x_i^k)_{i=1}^n \|_\infty\leq1,\ 1\leq k\leq m\right\},
+\end{align*}
+
+\item Properly typset the expression: $\operatorname{Re} z$.
+
+\item Properly typeset indexes in the following sum:
+\[
+f(x)=\sum_{\substack{n=0\\ k=2}}^\infty a_n^k
+\]
+
+\item Properly typeset the following theorem
+
+\begin{thm}[Cauchy--Hadamard]
+\noindent\textbf{Theorem 1} (Cauchy--Hadamard) \emph{The radius of convergence $R$ of the power series 
+\[
+\sum_{n=0}^\infty a_n(z-z_0)^n\ \ \ \ \ |z-z_0|<R
+\]
+can by calculated via the following formula
+\[
+\frac{1}{R}=\limsup_{n\to\infty} \sqrt[n]{|a_n|}.
+\]}
+\end{thm}
+
+
+\begin{df}[Prime numbers]
+ A number is called prime, if it is not compound. 
+\end{df}
+
+\item Typeset the follwing matrix (display-style):
+\[
+\begin{pmatrix}
+         a_{11} & a_{12}\\
+         a_{21} & a_{22}
+       \end{pmatrix}
+\]
+and in the text $\left\{\begin{smallmatrix}
+                            a_{11} & a_{12}\\
+                            a_{21} & a_{22}
+                          \end{smallmatrix}
+     \right\}$
+     Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do
+     eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut
+     enim ad minim veniam, quis nostrud exercitation ullamco laboris
+     nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in
+     reprehenderit in voluptate velit esse cillum dolore eu fugiat
+     nulla pariatur. Excepteur sint occaecat cupidatat non proident,
+     sunt in culpa qui officia deserunt mollit anim id est laborum.
+
+\end{enumerate}
+\end{document}
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