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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §13.6 Maxima, Minima, and Saddle Points, #26 · Multivariable Calculus · Gradient & optimization

For …, what are the equations … and

For $f (x, y) = \frac{1}{4} x^{4} - x y + \frac{1}{4} y^{4}$ , what are the equations $f_{x} = 0$ and $f_{y} = 0$ ? What are their solutions? What is $f_{m i n}$ ?

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §13.6 Maxima, Minima, and Saddle Points, #26

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