[PD] basic DSP stuff
Frank Barknecht
fbar at footils.org
Mon Nov 7 23:45:57 CET 2005
Hallo,
Piotr Majdak hat gesagt: // Piotr Majdak wrote:
> Chuckk Hubbard wrote:
> >i*sin(a) and i*sin(b) multiply to -sin(a)sin(b)?
>
> let's forget the sin*sin and look at the i*i part only: since i =
> sqrt(-1) by definition, i*i is -1 (slowly: i*i= sqrt(-1)*sqrt(-1) =
> sqrt(-1 * -1) = sqrt((-1)^2) = -1)
Your equations are a bit, uhm, misleading, because (-1)^2 is 1, so
sqrt(-1 * -1) = sqrt(1) = 1
Anyway, i is the unit, which fulfills the equation: i*i = -1
Ciao
--
Frank Barknecht _ ______footils.org_ __goto10.org__
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