Answered: Find the critical points for the…

Find the critical points for the function: f(x,y)=x3+y3-9x2-48y-3 and use the Second Derivative Test to classify each as a local maximum, local minimum, saddle point, or none of these.

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter3: Functions

Section3.3: More On Functions; Piecewise-defined Functions

Problem 99E: Determine if the statemment is true or false. If the statement is false, then correct it and make it...

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Question

Find the critical points for the function:

f(x,y)=x³+y³-9x²-48y-3

and use the Second Derivative Test to classify each as a local maximum, local minimum, saddle point, or none of these.

Formula Formula A function f(x) attains a local maximum at x=a , if there exists a neighborhood (a−δ,a+δ) of a such that, f(x)<f(a), ∀ x∈(a−δ,a+δ),x≠a f(x)−f(a)<0, ∀ x∈(a−δ,a+δ),x≠a In such case, f(a) attains a local maximum value f(x) at x=a .

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