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Global Extrema in Two Variables (KristaKingMath)
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Extreme value theorem, extrema in the set D (KristaKingMath)
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Local Extrema, Critical Points, & Saddle Points of Multivariable Functions - Calculus 3
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Multi-variable Optimization & the Second Derivative Test
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Lagrange multipliers in three dimensions with two constraints (KristaKingMath)
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integral of sin(x)/x from 0 to inf by Feynman's Technique
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Worst Fails of the Year | Try Not to Laugh 💩
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