Unformatted text preview: ∂ 2 f ∂x∂y . State any assumptions you needed to make. 4: Let g : R 2 → R where g has continuous second partial derivatives. Calculate f xy where f : R 2 → R is deﬁned by f ( x, y ) = g ± x 2 y, x cos y ² ....
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 Fall '08
 WOLCZUK
 Math, Chain Rule, Derivative

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