In Problems 4 to 10, the sketches show several practical examples of electrical signals (voltages or currents). In each case we want to know the harmonic content of the signal, that is, what frequencies it contains and in what proportions. To find this, expand each function in an appropriate Fourier series. Assume in each case that the part of the graph shown is repeated sixty times per second.
Triangular wave; the graph consists of two straight lines whose equations you must write! The maximum voltage of 100v occurs at the middle of the cycle.
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Mathematical Methods in the Physical Sciences
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