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$\int2^2\cos\left(\pi x\right)dx$
Learn how to solve differential calculus problems step by step online. Find the integral of y=cos(pix)2^2. Find the integral. Calculate the power 2^2. The integral of a function times a constant (4) is equal to the constant times the integral of the function. Apply the formula: \int\cos\left(ax\right)dx=\frac{1}{a}\sin\left(ax\right)+C, where a=\pi .