How to Derive the Laplace Transfer Function for a Parallel RC Circuit?

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Hello,

I am struggling to see how this was achieved...

acw260 said:
Ip(s) / s = V(s)/R + sCV(s)
therefore
V(s) = Ip(s) / s(sC+1/R)

Could someone point me in the right direction please?

Thanks
 

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