Let h : R → R be some twice-differentiable function. Define f(x,y) = h(x) for all x ≠ 0. Show that 02 f дудх хадга + 2xy ?x2 202f +y2 = 0. дуг

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A: Given, f(200,300)=1000 ∂f∂x(200,300)=12∂f∂y(200,300)=10

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A: (a)

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A: The solution are next step