Question: Consider the following function of two variables: f(x,y) = x^4 - xy + y^4 . 1. Find the gradient vector and the stationary values of

Consider the following function of two variables: f(x,y) = x^4 - xy + y^4 .

1. Find the gradient vector and the stationary values of the function.

2. Find the Hessian matrix and hence determine the nature of the stationary values you just found

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