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Integration by parts Learn how to use the integration by parts formula to find the integral of a function involving the exponential (e^x) and a trigonometric function. To complete this problem, you'll need to identify which part of the function will be set equal to u, and which part of the function will be set equal to dv. Then you'll take the derivative of u to find du and take the integral of dv to find v. Then you'll plug u, du, v and dv into your integration by parts formula. With this particular problem, you'll have to perform a second round of integration by parts. After using integration by parts twice, you'll have to move the remaining integral from the right hand side to the left hand side, and then divide both sides by the coefficient from the left hand side in order to solve for the original integral.
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