Let f(x,y,z)=x² +x(2y+z)- 1 + 2y cos x. Find all the critical points of f and determine whether it is local minima, local maxima, saddle points or none of them.

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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Let f(x,y,z)=x² +x(2y+z)-
1
+ 2y cos x. Find all the critical points of f
and determine whether it is local minima, local maxima, saddle points or none of them.
Transcribed Image Text:Let f(x,y,z)=x² +x(2y+z)- 1 + 2y cos x. Find all the critical points of f and determine whether it is local minima, local maxima, saddle points or none of them.
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