Find all points on the surface z = x2 - 2xy - y2 - 8x + 4y

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Find all points on the surface
z = x2 - 2xy - y2 - 8x + 4y
where the tangent plane is horizontal.

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Calculus

ISBN: 978-0131429246

9th edition

Authors: Dale Varberg, Edwin J. Purcell, Steven E. Rigdon

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Question Posted: Jun 21, 2016 11:11 AM

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Find all points on the surface z = x2 - 2xy - y2 - 8x + 4y

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