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Math Help - Reslove x from equation

  1. #1
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    Reslove x from equation

    Hi

    I need help resolving x from this equation. So that I end up with an equation like x = ...

    y=sine(x*pi)/(x*pi)

    The equation is used in FFT analysis, describing the amplitude of the leakage.
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  2. #2
    MHF Contributor
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    I doubt that the inverse of the sinc function can be expressed as a composition of conventional functions like root and trigonometric functions. It can be approximated by polynomials. See here.
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