Cleanup

Intermediate/Slide Rules/parts/3 division.tex

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+\section{Division}
+
+Now that you can multiply, division should be easy. All you need to do is work backwards. \\
+Let's look at our first example again: $3 \times 2 = 6$.
+
+\medskip
+
+We can easily see that $6 \div 3 = 2$
+
+\begin{center}
+\begin{tikzpicture}[scale=1]
+	\cdscale{\cdscalefn(2)}{1}{C}
+	\cdscale{0}{0}{D}
+
+	\slideruleind
+		{\cdscalefn(6)}
+		{1}
+		{Align here}
+
+	\slideruleind
+		{\cdscalefn(2)}
+		{1}
+		{2}
+\end{tikzpicture}
+\end{center}
+
+and that $6 \div 2 = 3$:
+\begin{center}
+\begin{tikzpicture}[scale=1]
+	\cdscale{\cdscalefn(3)}{-3}{C}
+	\cdscale{0}{-4}{D}
+
+
+	\slideruleind
+		{\cdscalefn(6)}
+		{-3}
+		{Align here}
+
+	\slideruleind
+		{\cdscalefn(3)}
+		{-3}
+		{3}
+
+\end{tikzpicture}
+\end{center}
+
+If your left-hand index is off the scale, read the right-hand one. \\
+Consider $42.25 \div 6.5 = 6.5$:
+
+\begin{center}
+\begin{tikzpicture}[scale=1]
+	\cdscale{\cdscalefn(6.5) - \cdscalefn(10)}{1}{C}
+	\cdscale{0}{0}{D}
+
+
+	\slideruleind
+		{\cdscalefn(4.225)}
+		{1}
+		{Align here}
+
+	\slideruleind
+		{\cdscalefn(6.5)}
+		{1}
+		{6.5}
+
+\end{tikzpicture}
+\end{center}
+
+Place your decimal points carefully.
+
+\vfill
+\pagebreak
+
+\problem{}
+Compute the following using your slide rule. \\
+
+\begin{enumerate}
+	\item $135 \div 15$
+	\item $68.2 \div 0.575$
+	\item $(118 \times 0.51) \div 6.6$
+\end{enumerate}
+
+\begin{solution}
+	\begin{enumerate}
+		\item $135 \div 15 = 9$
+		\item $68.2 \div 0.575 = 118.609$
+		\item $(118 \times 0.51) \div 6.6 = 9.118$
+	\end{enumerate}
+\end{solution}
+
+\vfill
+\pagebreak