\ifx\pdfunknown\relax
 \WARMprocessMMA{Q1}{eps}{mbb}
\else
 \WARMprocessMMA{Q1}{pdf}{mbb}
\fi
\renewcommand{\xyWARMinclude}{\scaledfig{.7}}%
\begin{xy}
 \xyMarkedImport{}
% \xyShowMarkPoints{*[red]@{x}}{-}
 \xyMarkedPos{para}*+{}
   ,\ar@{<-}+(.7,25)*+!D\txt{base of parabola}
 \xyMarkedPos{cub1}*+++{},\ar@{<-}-(3.5,15)
  *+!U(.8)\txt{turning points\\of a cubic}="cub"
 \xyMarkedPos{cub2}*++{},\ar@{<-}"cub",
 \xyMarkedPos{neg1}*++{},\ar@{<-}+(.5,-25),
  *+!L(.6)\txt{local minima}="min"
 \xyMarkedPos{neg2}*+{},\ar@{<-}"min",
\end{xy}