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Apply the trigonometric identity: $\cos\left(\theta \right)^2$$=\frac{1+\cos\left(2\theta \right)}{2}$
Learn how to solve sum rule of differentiation problems step by step online.
$\int x\frac{1+\cos\left(2x\right)}{2}dx$
Learn how to solve sum rule of differentiation problems step by step online. Find the integral int(xcos(x)^2)dx. Apply the trigonometric identity: \cos\left(\theta \right)^2=\frac{1+\cos\left(2\theta \right)}{2}. We can solve the integral \int x\frac{1+\cos\left(2x\right)}{2}dx by applying integration by parts method to calculate the integral of the product of two functions, using the following formula. First, identify u and calculate du. Now, identify dv and calculate v.