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Quandaries & Queries
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 Topic: partial derivative
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 Heat equation 2017-11-23 From Max:What does du\dt=a(triangle)^2u mean. Can it be solved for t.Answered by Penny Nom. Partial derivatives 2009-01-17 From Meghan:I have a question I've been working at for a while with maxima/minima of partial derivatives. "Postal rules require that the length + girth of a package (dimensions x, y, l) cannot exceed 84 inches in order to be mailed. Find the dimensions of the rectangular package of greatest volume that can be mailed. (84 = length + girth = l + 2x + 2y)"Answered by Harley Weston. A partial derivative 2004-03-19 From Penny Nom:Is it possible to differentiate the following equation, if so could you please explain. S=SQRT(T-(5/X^2)) I would like the derivative of S with respect to X.Answered by Harley Weston. Derivées partielle 1999-10-19 From Arnaud Flandin:Quel est la definition des derivées partielle Answered by Claude Tardif.

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