function f(x, y) = 7x – 8y + 2xy – x² + y³

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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function f(x, y) = 7x – 8y + 2xy – x² + y³
Transcribed Image Text:function f(x, y) = 7x – 8y + 2xy – x² + y³
Select the item below that best describes the point (5/2,-1)
(a) This point is not a critical point.
(b) f(x,y) has a local maximum at this point
(c) f(x,y) has a local minimum at this point
(d) f(x,y) has a saddle point at this point
(a)
(b)
(c)
O (d)
Transcribed Image Text:Select the item below that best describes the point (5/2,-1) (a) This point is not a critical point. (b) f(x,y) has a local maximum at this point (c) f(x,y) has a local minimum at this point (d) f(x,y) has a saddle point at this point (a) (b) (c) O (d)
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