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Any expression multiplied by $1$ is equal to itself
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$\int\frac{\cos\left(x\right)}{x}dx$
Learn how to solve integral calculus problems step by step online. Find the integral int((cos(x)1)/x)dx. Any expression multiplied by 1 is equal to itself. Rewrite the function \cos\left(x\right) as it's representation in Maclaurin series expansion. Bring the denominator x inside the power serie. Simplify the expression inside the integral.