Is the set {sin nx , cos mx} an orthogonal set with respect to the inner product on the set of all continuous real-valued functions given by (f, g) = S",fg dt ? Justify your answer. 9. Note: 1- cos(2x) sin²x = cos?x = 1+ cos(2x) sin A cos B = =[sin(A – B) + sin(A+B)]

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A: See the attachment

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A:

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A: Find f if ∇f=4xyi +(2x^2+8y)j f=____

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A:

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A: