%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  7. Auflage
%% 
%%  Beispiel 21-03-6 auf Seite 355.
%% 
%%  Copyright (C) 2016 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
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%% 
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{193.16928pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pstricks,pst-blur,amsmath}
%StopShownPreambleCommands
\begin{document}
\psset{linestyle=none}
\psblurbox{\parbox{0.9\linewidth}{%
  \[F(x)=\int f(x)dx\]}} \\[10pt]
\psblurbox[blurbg=red]{%
  \parbox{0.9\linewidth}{%
    \[F(x)=\int f(x)dx\]}} \\[12pt]
\psblurbox[blurbg=blue!30!red!80,
  blurradius=5pt]{%
  \parbox{0.9\linewidth}{%
    \begin{align}
      x_1 &= x_0-\frac{F(x_0)}%
        {F^\prime(x_0)}\ge x_0
    \end{align}}}
\end{document}
