On Friday 12 Sep 2003 3:36 pm, you wrote:

snip

>
> So, what's a common use of the geometric mean? It's the resonant frequency
> of a tuned circuit when you are given the upper and lower 3dB frequencies
> (FL and Fh). Fc=sqrt(FL*Fh) .
>

Are you sure about this?  It implies the shape of a resonant circuit is
different on either side of resonance and I see no reason why this should be
so.

Ian

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