I still find it difficult to grasp the concept of a CT Fourier transform. When it is in DT it is easy to express the Fourier coefficients. We just need to express all the coefficients in one period. But when it is CT isn't there an infinite amount of coefficients? Can we even express a single coefficient like a1 or a2?

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Basic linear algebra uncovers and clarifies very important geometry and algebra.

Dr. Paul Garrett