denotes/ode.sty at master · malcolmroberts/denotes · GitHub

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\def\ddt#1{\Total{#1}{t}}
\def\ppt#1{\Partial{#1}{t}}
\def\ppx#1{\Partial{#1}{x}}
\def\ppy#1{\Partial{#1}{y}}
\def\ppz#1{\Partial{#1}{z}}
\def\vxi{\bm{\xi}}
\def\zhat{\v{\hat z}}

%\newcommand{\abs}[1]{\left|#1\right|}

% shortcuts for derivatives
\newcommand\pp[2]{\frac{\partial #1}{\partial #2}}
\newcommand\pptwo[2]{\frac{\partial^2 #1}{\partial #2^2}}
\newcommand\dd[2]{\frac{d #1}{d #2}}
\newcommand\ddtwo[2]{\frac{d^2 #1}{d #2^2}}
%\newcommand\pptwo[2]{\frac{\partial^2 #1}{\partial #2^2}}
\newcommand\Laplace[0]{\mathcal{L}}

\renewcommand{\be}{\begin{eqnarray}}
\renewcommand{\ee}{\end{eqnarray}}
\newcommand{\bee}{\begin{eqnarray*}}
\newcommand{\eee}{\end{eqnarray*}}

\newcommand\workedexample[2]{
  \noindent\emph{Example}:\\
  \indent{#1}
  \noindent\emph{Solution}:
  \noindent{#2}
}

\newcommand\hidesolution[1]{\ifthenelse{\value{showsolutions}=1}{
    \\\emph{Solution}: #1}{}}