How to compute phase of the signal?

[ramdas]

Suppose you are given a phase
spectrum or (/and) equation of the (main) signal only and you are said that the given (main) signal is
formed of 3 other signals.
Is it possible to compute phases of these three signals from the
equation or (/ and) phase
spectrum of the (main) signal?
Also,what information is containedin the phases of these signals?

Note : You can take any equation
of your choice.but just not take
equation of sum of 3 signal
functions. at least mix 2 signal
functions together

 

[jasonRF]

I'm not sure what you are asking - are the 3 signals of known functional form? If not, then this cannot be done uniquely.

By the way, the last part of your post makes this sound like a homework question. Is it?

jason