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$\int\cos\left(\frac{\pi +nx}{\frac{3}{2}}\right)dx$
Learn how to solve problems step by step online. Solve the trigonometric integral int(cos((pi+nx)/(3/2)))dx. Simplifying. Simplify the fraction \frac{\pi +nx}{\frac{3}{2}}. We can solve the integral \int\cos\left(\frac{2}{3}\left(\pi +nx\right)\right)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.