(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Detmerine the Power and rms value for each of the following signals:

a)5 + 10cos(100t+pi/3)

... more signals

3. The attempt at a solution

It's hard to right out integral signs or I dont know the way to do so I'll use I(lower bound, upper bound) to denote an integral

a)P= lim t->inf. (1/T) [I(-T/2,T/2) [5 + 10cos(100t+pi/3)^2dt]

=lim t->inf. (1/T) [25T + I(-T/2,T/2) 100 cos^2(100t+pi/3)dt +I(-T/2,T/2)50cos(100t + pi/3)dt->0

= lim t->inf. (1/T) [25T + 50T{I(-T/2,T/2)cos(200t+2pi/3)dt}->0

= 25 +50 = 75, Rms 75^ (-1/2)

does it look like i'm following the right idea?

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# Homework Help: Signals and Systems coursework help

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