I bought a biophysics book the other day, and immediately began reading it. Sadly, I'm only 12 pages in now, because I seem to have run up against a wall in my understanding. You see, I don't understand a step being taken in the math, and am not sure what I should learn to understand it better.(adsbygoogle = window.adsbygoogle || []).push({});

image of paragraph.

Specifically, what loses me is the V-hat object - no idea what that is. And furthermore, I don't know where the 2pi*i term comes from. I know the bare basics of Fourier Transform, but I think there's something missing. And Koch doesn't define the V-hat object. (I'm life sciences, please forgive my ignorance.)

Any tips would be majorly appreciated!

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# RC Circuit Filtering Halp?

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