Find the local maximum and minimum values and saddle points of the function.

(f(x,y)=y^4+4y^2-x^2) The objective of this question is to find the local minimum and maximum values and the saddle points of the given multi-variable function. For this purpose, a second derivative test is used. A function of several variables, also known as a real multivariate function, is a function having more than one argument, all of […]