subexpressions

[Steve Howell]

--- Stef Mientki <S.Mientki-nospam at mailbox.kun.nl>
wrote:
> Maybe he meant
>    sin(x)^2 + cos(x)^2
> which is well known demodulation technique if you
> create two signals 90 degrees out of phase.
> 

There's a shorter way to phrase that expression, of
course. :)

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