Recent content by perryben

So the power is S=VI*=ZI^2. the question is whether V=ZI* or just ZI. Using V=ZI when I calculate the voltage i get a negative answer. Thanks!

If I had a sinusoid, how would I find the average value of it over a given interval. Say -pi/5 to pi/5 for instance. Thanks everybody.

w[n] = exp(j*pi*n) w[n] = (−1)^n Hi, can anyone off hand verify why these two exressions are equal? Thanks

Yah, but its a square sheet. thanks though

On this physics problem i need to do a double integral (dx,dy) of 1/sqrt(x^2 + y^2 +z^2). Which looks easy enough at first, until I reallized (after many hours) I cannot figure out how to integrate it. I am sure at this point there is some trig substitution (learned too long ago...), but I am...

Are there any good tables showing the convergence of common summations? I am convolving some discrete time signals and they can get very tricky. Thanks all

Thank you very much. I reallize now what I was describing could have been ([any integer] 0 0).

I just got the same question asking to find the the nearest distance between, say parallel (110) or (100) planes. But to my understanding there are infinite such parralel planes within the unit cell. And the distance should theoretically be zero. Unfortunately I do not believe this topic is...