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Fourier Series

Before looking at the example, you need to know the formula of Fourier Series as shown. If you know the additional information shown, you could reduce your work.  (1) Odd functions have Fourier Series with only sine terms, which means you only find the coefficients, b’s in the formula.  (2) Even functions have Fourier Series...

Integration By Parts

In this example, there is a product of x^2 and cosx dx in the integrand. Does simple u-substitution method work for this example? In order to use the simple u-substitution method, the relationship between two functions must be the original and its derivative each other except for constants. Unfortunately, x^2 cannot be the derivative of...