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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §3.2 Maximum and Minimum Problems, #68 · Calculus · Optimization

Suppose … is fixed

This problem goes back to the theory.

Suppose $y$ is fixed. The minimum of $x^{2} + x y - y^{2}$ (a function of $x$ ) is $m (y) =$ ______. Find the maximum of $m (y)$ .

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §3.2 Maximum and Minimum Problems, #68

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