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\textbf{Math 126A: Calculus II}
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\textbf{Quiz 10}\quad \textsl{November 23, 1999}
 
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1.  Identify the following conic section.  Find its foci, vertices,
center, asymptotes, and directrix as appropriate.
\[ x^2-4x+4y^2=0 \]

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2.  What conic section does the equation
\[ x^2+2xy-2y^2+x+y+1=0 \]
represent?  Give a reason for your answer.

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