Difficult Concepts
Fourier Series Transformation - I had problems in determining which frequency is the fundemental frequency that should be used in the transfomation and to find $ a_k\, $.
For example, $ y = cos(3\pi t) + sin(5\pi t)\, $
Fourier Transform - I would like to know what a clear strategy that we can follow to solve problems like $ e^{at}cos(3t)u(t)\, $
