Please help me find proofs of the Butterworth lowpass filter and the bandpass filter.(adsbygoogle = window.adsbygoogle || []).push({});

for the butterworth. i need to prove (Vo/Vin) = 1 / [1 + (f/fc)^4]^(1/2)

for the bandpass: (Vo/Vin) = 1/[1 + {[(w^2) / (wo^2)] - 1} / wRC]

my professor said these proofs were on the internet, but i can't find anything useful.

any help would be greatly appreciated. thanks.

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# Lowpass Butterworth & Bandpass Filters

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