what is dirac delta function and its fourier transform and
its importance?

Answer Posted / roy vincent

a dirac delta function has a strength = 1. Consider a signal in time domain, its fourier transform will give its frequency contents with proper weightage. A dirac delta function has all frequencies in equal amplitudes. So this can be used to analyse the system behavior. In fact u can find out the system transfer function, which can be applied to any arbitrary input and predict its output.

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