%   To use these commands you must use the file M300.sty as a package
%   your LaTeX preamble. For example, the following two commands will activate 
%   the m300.sty package all in 12 point
%   type. 
%
%           \documentclass[12pt]{article}
%           \usepackage{m300}
%
%   so that they are activated at startup.
%
%
\def\address{\begin{minipage}{35 em}    % A MACRO TO INSERT YOUR ADDRESS.
PUT YOUR NAME HERE\\
Mathematics Department\\
Washington State University\\
Pullman, WA. 99164-3113\\
Email: {\tt PUT YOUR EMAIL ADDRESS HERE.}\\
Voice Phone: (???)-???-????\\            % PUT YOURE PHONE NUMBERS HERE IN
Department Fax: (???)-???-????\\         % PLACE OF THE ????'S.
Department Voice Phone: (???)-???-????
\end{minipage}}
%
\def\al{\alpha}
\def\Ar{\Rightarrow}
\def\ar{\rightarrow}
%
\def\bar{                    % THIS SIX LINE COMMAND MAKES THE VERTICAL 
\!\!\!\!                     % BAR IN THE FUNDAMENTAL THEOREM OF CALCULUS.
\begin{array}{c}             % WITH PROPER SPACING OF SUB-SUPER SCRIPTS.
\rule[3ex]{1ex}{.5pt}\hspace{-1ex}\rule[-1.6ex]{1ex}{.5pt}
\rule[-1.6ex]{.5pt}{4.6ex}
\end{array}}
%
\def\bm#1{{\mbox{\boldmath${#1}$\unboldmath}}}
\def\d{\,{\rm d}}
\def\dis#1{\mbox{${\displaystyle #1}$}}
\def\doublespace{\baselineskip 2em}
\def\Frac#1#2{\frac{\displaystyle #1}{\displaystyle #2}}
\def\Hat{\widehat}
\def\Hfill{\hspace*{\fill}}
\def\Hline{{\noindent\rule{\textwidth}{1.5pt}}}
\def\Mat{{\tt Mathematica}}
%\def\mb#1{{\mbox{\boldmath${#1}$\unboldmath}}}
\def\mb#1{\ensuremath{\mathbf{#1}}}
\def\niint{\mbox{${\displaystyle{\int\!\!\!\int}}$}}
\def\noi{\noindent}
\def\oar#1{{\overrightarrow{#1}}}
\def\ol{\overline}
\def\Part#1#2{\frac{\displaystyle \partial #1}{\displaystyle \partial #2}}
\def\txt#1{\quad\mbox{#1}\quad}
\def\Vec#1{{\overrightarrow{\mb{#1}}}}
\def\Vfill{\vspace*{\fill}}
%
\def\wsu{
      \centerline{\LARGE Washington State University}
      \vspace{.5ex}
      \centerline{\underline{\hspace{\textwidth}}}
      \centerline{{\sf \small Department of Pure and Applied Mathematics,
      Pullman, WA 99164-3113}}
      \vspace{6ex}
        }
%
\def\WT{\widetilde}
%
\newcounter{prob}
\def\probnum{\stepcounter{prob}\noindent\arabic{prob}.)\ }
%
\newcounter{subprob}
\def\subprob{\stepcounter{subprob}\noindent\Alph{subprob}.)\ }
%
%
%   The next three \def's reinstate some plain TeX commands into LaTeX. Native
%   mode LaTeX comments them out.
%   See Ch. 19 of the TeXbook for documentation.
%   See also page 126 of Antoni Diller's Book ``LaTeX LINE BY LINE''.
%   Since these \def's include @-signs in their names you cannot just
%   include them into your *.tex file like a \def...}!
%
\def\eqalign#1{\null\,\vcenter{\openup\jot   \m@th
  \ialign{\strut\hfil$\displaystyle{##}$&$\displaystyle{{}##}$\hfil
      \crcr#1\crcr}}\,}
%
\def\@lign{\tabskip\z@skip\everycr{}} % restore inside \displ@y
%
\def\displaylines#1{\displ@y
  \halign{\hbox to\displaywidth{$\@lign\hfil\displaystyle##\hfil$}\crcr
    #1\crcr}}
%
\def\eqalignno#1{\displ@y \tabskip\@centering
  \halign to\displaywidth{\hfil$\@lign\displaystyle{##}$\tabskip\z@skip
    &$\@lign\displaystyle{{}##}$\hfil\tabskip\@centering
    &\llap{$\@lign\hbox{##}$}\tabskip\z@skip\crcr
    #1\crcr}}
%
\def\leqalignno#1{\displ@y \tabskip\@centering
  \halign to\displaywidth{\hfil$\@lign\displaystyle{##}$\tabskip\z@skip
    &$\@lign\displaystyle{{}##}$\hfil\tabskip\@centering
    &\kern-\displaywidth\rlap{$\@lign\hbox{##}$}\tabskip\displaywidth\crcr
    #1\crcr}}
%
\def\eqnum{{\refstepcounter{equation}\theequation}}
%
\def\eqlab#1{{\refstepcounter{equation}\label{#1}\theequation}}
%
\def\eqn(#1){\eqno\hbox{(#1)}}
%
%    The next \def comes from page 135 of Diller.
%
\def\Label#1{\let\@currentlabel=\theequation\label{#1}}