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    Fourier coefficients

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    Fourier coefficients / b1, b2, b3, b4, b5... b11.
    I have an output of an electronic device (full wave rectifier) that gives a sine wave with the negative part transposed symmetric to xx so that the function is always positive. I have to find the fourier coefficients of that function from n= 1 -> n=11, namely>b1, b2, b3, b4, b5... b11.

    What are the exact decimal terms of the b1, b2, b3, b4, b5... b11 coefficients?

    The wave is shown in the attachment .gif file.

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    Note: since the function is symmetric about the y axis, only the cosine terms of the fourier ...

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    This solution is comprised of a detailed explanation to answer what are the exact decimal terms of the b1, b2, b3, b4, b5... b11 coefficients.