%\newcommand{\highlight}[1]{\colorbox{yellow}{$\displaystyle #1$}}
\newcommand\Fontvi{\fontsize{9.5}{1}\selectfont}
%%%%%%%
\newcommand{\msout}[1]{\text{\sout{\ensuremath{#1}}}}
\pgfplotsset{compat=1.8}

\newcommand\myheading[1]{%
\par\bigskip
{\Large\bfseries#1}\par\smallskip}

\makeatletter
\newcommand\titlegraphicii[1]{\def\inserttitlegraphicii{#1}}

\newcommand\derivative[5]{%
	\tkzDefPointByFct[draw](#1) \tkzGetPoint{start}
	\tkzDefPointByFct[draw](#2) \tkzGetPoint{end}
	\draw[thin,|-|,yshift=-3pt] (start) -- node[black,fill=white,#5] {#3}(start-|end);  
	\draw[thin,|-|,xshift=3pt] (start-|end) -- node[black,fill=white,right] {#4}(end); 
	%\draw[thin] (start) --(end); 
}
