x(t) = sigma (from m = -infinity to infinity) zm e^(j*m*omega*t)(adsbygoogle = window.adsbygoogle || []).push({});

now my book says that using orthonormality property, we can calculate zm by calculating scalar product of x(t) and em(t) (where em(t) = e^(j*m*omega*t))

hows that possible??

please feel free to move the thread if its in wrong section!

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# Orthonormality property

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