\section{Slide Rules}

Mathematicians, physicists, and engineers needed to quickly solve complex equations even before computers were invented.

\vspace{2mm}

The \textit{slide rule} is an instrument that uses the logarithm to solve this problem. \par
Before you continue, tear off the last page of this handout and assemble your slide rule.

\vspace{2mm}

There are four scales on your slide rule, each labeled with a letter on the left side:

\def\sliderulewidth{13}
\begin{center}
\begin{tikzpicture}[scale=1]
	\tscale{0}{9}{T}
	\kscale{0}{8}{K}
	\abscale{0}{7}{A}

	\abscale{0}{5.5}{B}
	\ciscale{0}{4.5}{CI}
	\cdscale{0}{3.5}{C}

	\cdscale{0}{2}{D}
	\lscale{0}{1}{L}
	\sscale{0}{0}{S}
\end{tikzpicture}
\end{center}

Each scale's ``generating function'' is on the right:
\begin{itemize}
	\item T: $\tan$
	\item K: $x^3$
	\item A,B: $x^2$
	\item CI: $\frac{1}{x}$
	\item C, D: $x$
	\item L: $\log_{10}(x)$
	\item S: $\sin$
\end{itemize}

Once you understand the layout of your slide rule, move on to the next page.

\pagebreak