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**1. Homework Statement**

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?