Recent content by Don Diego

Hi! Now i have one new problem, i can't run this Laplace equation (see attachement) I don't know what to do, sorry... please help me! Thanks! See the "InverseLaplaceTransform" don't show me the answer... why?

Sorry Hurkyl, but I'm new in mathematica, i didn't know about "complexexpand"... i think that you didn't realize that I'm a newbie, i don't understant everything about mathematica, thanks for yours comments ;)

This was just un exemple, what i really want to do it's to manipulate the complex expressions in a theorycal way, I'm learning about filters ok?, i don't want to just plot something without understanding the original relation. my problem was just about the manipulation of complex equations and...

Voila Voila! RLC Low pass filter in the attachement! thanks a lot!

GREAT GREAT! I'm going to try this! Thanks so much gueromm00! you are great! I'm going to put my results with à more complex filter! :):):)! thanks!

Hi Hurkyl, and thanks for the answer: My problem is that i can't get the "modulus" or "norm" of the Complex number, once i get the norm (norm = abs) i would like to plot it as a fonction of "w", how can i get the Norm of à complex number without fixed values?? exemple: Norm[1/(1 + 3...

up?? somebody?? help!

Hi everybody: I'm trying to analyse equations of analogue electronic filters, but i can't get the "norm" of the complex polynom if i use variables (or symbols? what's the difference?), here's the simplest exemple (RC low pass filter, a represents R*C*w, reals variables > 0): Assuming[ a...