Evaluate xy dx + (x+y)dy along the curve y = 4x from (- 2,16) to (- 1,4). xy dx + (x+ y)dy =

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A: solution:-∫cos3x dxwe know that cos3x=4cos3x−3cosxcos3x=cos3x+3cosx4=∫cos3x+3cosx4 dx

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A: This question is related to Functions, we will solve it using given information.

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A: answer is in next step

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A: Topic:- application of integration

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A: I have appended the formula used in the solution part.

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A: Topic:- application of integration