欧拉恒等式

彩色定义

\newcommand{\growth}{\color{c1}}
\newcommand{\rotation}{\color{c2}}
\renewcommand{\time}{\color{c3}}
\newcommand{\real}{\color{c4}}
\newcommand{\imaginary}{\color{c5}}
\newcommand{\location}{\color{c6}}



\growth      Growth
\rotation    pushing sideways
\time        lasting for half a circle
\
\location    points you
\real        backwards