LyX
Tries to mimic LaTeX functionality [6].
![[Picture]](lyx.gif)
File -> Export -> LaTeX:
%% LyX 1.3 created this file. For more info, see http://www.lyx.org/.
%% Do not edit unless you really know what you are doing.
\documentclass[english]{article}
\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\makeatletter
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% LyX specific LaTeX commands.
%% Bold symbol macro for standard LaTeX users
\newcommand{\boldsymbol}[1]{\mbox{\boldmath $#1$}}
\usepackage{babel}
\makeatother
\begin{document}
Hello World! $\frac{\sqrt{a^{2}+b^{2}}}{2}$
\end{document}
%% Do not edit unless you really know what you are doing.
\documentclass[english]{article}
\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\makeatletter
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% LyX specific LaTeX commands.
%% Bold symbol macro for standard LaTeX users
\newcommand{\boldsymbol}[1]{\mbox{\boldmath $#1$}}
\usepackage{babel}
\makeatother
\begin{document}
Hello World! $\frac{\sqrt{a^{2}+b^{2}}}{2}$
\end{document}