Which of the following is a saddle point of th f (x, y) = x³ + y³ + 3y² − 3x − 9y + 2 ○ (1,3) O(-1,-3) O(-1,3) (1,1) None of the given choices

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter9: Multivariable Calculus
Section9.3: Maxima And Minima
Problem 2E
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Which of the following is a saddle point of the function
ƒ (x, y) = x³ + y³ + 3y² − 3x − 9y+ 2 ?
(1,3)
O(-1, -3)
○(-1,3)
○ (1,1)
O ○
None of the given choices
Transcribed Image Text:Which of the following is a saddle point of the function ƒ (x, y) = x³ + y³ + 3y² − 3x − 9y+ 2 ? (1,3) O(-1, -3) ○(-1,3) ○ (1,1) O ○ None of the given choices
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