In Problems 1-4, find fx(x, y) and fy(x, y), and explain, using Theorem 1, why f(x,y) has

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In Problems 1-4, find fx(x, y) and fy(x, y), and explain, using Theorem 1, why f(x,y) has no local extrema.
f(x,y) = x3 - y2 + 7x + 3y + 1

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College Mathematics for Business Economics Life Sciences and Social Sciences

ISBN: 978-0321614001

12th edition

Authors: Raymond A. Barnett, Michael R. Ziegler, Karl E. Byleen

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Question Posted: Apr 14, 2016 08:42 AM

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In Problems 1-4, find fx(x, y) and fy(x, y), and explain, using Theorem 1, why f(x,y) has

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College Mathematics for Business Economics Life Sciences and Social Sciences

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