Recent content by hmph

Homework Statement A given DSB-LC AM transmitter develops an unmodulated power output of 1kW across a 50 ohm resistive load. When a sinusoidal test tone of 5V is applied to the input of the modulator, it is found that the spectral line for each sideband carrier in the magnitude spectrum is...

it turns out that what i was doing was actually correct

Homework Statement I am trying to prove how \(g''(r)=\sum\limits_{k=2}^\infty ak(k-1)r^{k-2}=0+0+2a+6ar+\cdots=\dfrac{2a}{(1-r)^3}=2a(1-r)^{-3}\). I don't know what I am doing wrong and am at my wits end. The Attempt at a Solution (The index of the summation is always k=2 to infinity)...

Thank you, it worked. I probably did it in a more convoluted manner than required, but I was able to do it in around 12 lines. I didn't realize that you could distribute like that at first.

Hi, I have been trying for a very long time to prove the following set theory identity (A union B) intersect (B union C) intersect (C union A) = (A intersect B) union (B intersect C) union (C intersect A). I thought that I could simplify (A U B) intersect (B U C) intersect (C U A) as [B U...