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A drowning man and Snell's Law
Mohsin Javed, October 2013
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Surfaces of revolution
Georges Klein, March 2013
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Optimizing a bird's flight path
Toby Driscoll, November 2012
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Mean Value Theorem
Kuan Xu, October 2012
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Definite and indefinite integrals
Nick Trefethen, October 2012
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Delta functions and derivatives
Nick Trefethen, August 2012