Question
Find the Fourier transforms of(a) $\cos 2 t u(t)$(b) $\sin 10 t u(t)$
Step 1
For the first function, we have \[\cos 2t = \frac{e^{j2t} + e^{-j2t}}{2}\] and for the second function, we have \[\sin 10t = \frac{e^{j10t} - e^{-j10t}}{2j}\] Show more…
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