%% 
%%  Ein Beispiel der DANTE-Edition
%%  Mathematiksatz mit LaTeX
%%  3. Auflage
%%  Beispiel 06-08-2 auf Seite 111.
%%  Copyright (C) 2018 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.
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\documentclass[10pt]{screxa}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\AtBeginDocument{\setlength\parindent{0pt}}
%StartShownPreambleCommands
\usepackage{amsmath}\newcommand\rV{\rule{5mm}{0.4pt}}
%StopShownPreambleCommands
\begin{document}
\Large A\rV$\sqrt{\frac{x}{\lambda}}\rV\sqrt{\smash[b]{\frac{b}{\lambda}}}
  \rV\sqrt{\smash[t]{\frac{t}{\lambda}}}\rV\sqrt{\smash[tb]{\frac{tb}{\lambda}}}
  \rV\sqrt{\frac{b}{\lambda_{k_{i}}}}\rV\sqrt{\frac{b}{\smash[b]{\lambda_{k_{i}}}}}$\rV B
\end{document}