20. For the function z = f(x,y) = x? – y + 2, write a formula to calculate approximately the change in z, dz, determined by the small changes dx and dy about the point (1,1).
20. For the function z = f(x,y) = x? – y + 2, write a formula to calculate approximately the change in z, dz, determined by the small changes dx and dy about the point (1,1).
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter2: Functions And Graphs
Section2.6: Proportion And Variation
Problem 18E
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