![Using the second derivative test to classify extrema of a multivariable function — Krista King Math | Online math help Using the second derivative test to classify extrema of a multivariable function — Krista King Math | Online math help](https://i.ytimg.com/vi/YEkl6YmFYbM/maxresdefault.jpg)
Using the second derivative test to classify extrema of a multivariable function — Krista King Math | Online math help
![multivariable calculus - Calculate the partial derivative, local minima/maxima, and saddle points. - Mathematics Stack Exchange multivariable calculus - Calculate the partial derivative, local minima/maxima, and saddle points. - Mathematics Stack Exchange](https://i.stack.imgur.com/QwSHs.png)
multivariable calculus - Calculate the partial derivative, local minima/maxima, and saddle points. - Mathematics Stack Exchange
![College Park Tutors - Blog - Multivariate Calculus - Finding absolute maximums and minimums of a 2-variable function on a closed region College Park Tutors - Blog - Multivariate Calculus - Finding absolute maximums and minimums of a 2-variable function on a closed region](https://collegeparktutors.com/blog/user/pages/finding-absolute-maximums-and-minimums-of-a-2-variable-function-on-a-closed-region/p004-all-critical-points.jpg)
College Park Tutors - Blog - Multivariate Calculus - Finding absolute maximums and minimums of a 2-variable function on a closed region
![College Park Tutors - Blog - Multivariate Calculus - Finding absolute maximums and minimums of a 2-variable function on a closed region College Park Tutors - Blog - Multivariate Calculus - Finding absolute maximums and minimums of a 2-variable function on a closed region](https://collegeparktutors.com/blog/user/pages/finding-absolute-maximums-and-minimums-of-a-2-variable-function-on-a-closed-region/p004-boundary-d.jpg)