\input epsf
\nopagenumbers
\magnification=\magstep1

\noindent {\bf Problem statement} Rewrite the integral $$\int_0^1 \!\!
\int_0^{2x}\!\!  \int_0^{3y} H(x,y,z) \, dz\, dy\, dx$$ as a $dx\,
dy\, dz$ integral.

\medskip

\noindent {\bf Note} The integral can't be computed since no
information about $H$ is given. You probably should begin by
sketching, as accurately as possible, the volume over which the triple
iterated integral is taken.









\vfil\eject\end