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{\bf Quiz \#4; Tuesday, date: 02/13/2018}
{\bf MATH 53 Multivariable Calculus with Stankova}
{\bf Section \#114; time: 2 -- 3:30 pm}
{\bf GSI name: Kenneth Hung}
{\bf Student name:}
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\begin{enumerate}
\item Reduce the equation to one of the standard forms, classify the surface, and sketch it.
\[
x^2 - y^2 - z^2 + 2x - 6z - 8 = 0.
\]
\item {\em True / False?} Consider a space curve given by the vector equation $\rr(t)$. If all of its projections onto $xy$-plane, $yz$-plane and $xz$-plane are smooth, then the curve itself must be smooth.
\item {\em True / False?} One of the ways to visualize a space curve is to show it on a surface.
\end{enumerate}
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