What's sad is, formulas like that are actually an attempt to make things simpler and more readable, because otherwise it'd be a paragraph long and end up saying things like, "now divide that variable -- you remember, the variable that was produced by applying the function discussed above -- no, the one that involved the square root of your initial variable -- and then taking the sum of the other functions and integrating -- by the other one -- the one which is the remainder of the result of the Fourier function applied to..."