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\textbf{Math 225: Calculus III}
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\textbf{Quiz 1}\quad \textsl{Jan. 21/23, 1997}
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\begin{enumerate}
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\item 
Determine the (simplified) equation of the plane whose points are
equisdistant from the points $(1,2,3)$ and $(6,7,8)$.

\answerspace

\problemspace
\item 
Find a vector of the form $(1,y,1)$ that forms a $60^\circ$ angle with the
$x$-axis.

\answerspace

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