If f, (a,b) = f, (a,b) = 0, does it follow that f has a local maximum or local minimum at (a,b)? Explain.

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Chapter3: Functions
Section3.3: More On Functions; Piecewise-defined Functions
Problem 98E: Determine if the statemment is true or false. If the statement is false, then correct it and make it...
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If f, (a,b) = f, (a,b) = 0, does it follow that f has a local maximum or local minimum at (a,b)? Explain.
Choose the correct answer below.
O A. No. Cne (or both) of f, and f, must also not exist at (a,b) to be sure that f has a local maximum or local minimum
O B. No. It follows that (a,b) is a critical point of f, and (a,b) is a candidate for a local maximum or local minimum.
O C. Yes. The point (a,b) is a critical point and must be a local maximum or local minimum.
O D. Yes. The tangent plane to f at (a,b) is horizontal. This indicates the presence of a local maximum or a local minim
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Transcribed Image Text:If f, (a,b) = f, (a,b) = 0, does it follow that f has a local maximum or local minimum at (a,b)? Explain. Choose the correct answer below. O A. No. Cne (or both) of f, and f, must also not exist at (a,b) to be sure that f has a local maximum or local minimum O B. No. It follows that (a,b) is a critical point of f, and (a,b) is a candidate for a local maximum or local minimum. O C. Yes. The point (a,b) is a critical point and must be a local maximum or local minimum. O D. Yes. The tangent plane to f at (a,b) is horizontal. This indicates the presence of a local maximum or a local minim Click to select your answer. Terms of Use FresyTerms
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