Recent content by Wicketer

Is there a non-zero continuous function, f, R -> R such that ∫f(x) dx over (c, c^2+1) = 0, for all c in R? Hope this makes sense. I've been trying to find a more formal way of approaching this rather than just visualizing it with graphs. Any thoughts? Many thanks.

Thanks for your replies guys! milesyoung, the design can be simple as it will be powered with only +5V, and doesn't require isolation...but the design will be weighed against things like how large (or small) of a load it's capable of driving, ripple etc. I'm just juggling ideas to come up with...

Hey guys, Are you guys aware of any designs (other than buckboost or charge pump) for negative power supplies using just a positive voltage (and ground of course) as inputs? Creative designs are totally welcome. Thanks in advance!

Could someone kindly explain whether the 90 degree phase difference between sine & cosine functions contribute to the fact that they are orthogonal? I just studied Fourier series and treating sines and cosines as vectors is fine for my brain to handle, but I can't tell whether the phase...

Thanks a lot guys! I guess with math I just want a more theoretical background as opposed to EE which I'm guessing gets really hands-on and practical in later years. My career goals only go as far as my decision to do EE; something to do with electronics/technology. But I guess for...

Hey guys. I need physicsforums to help me make a decision. It's been a semester in college since I started my Electrical Engineering degree. I think I'd really love to major in something like Physics or Math alongside my current degree. The obvious question is which one... I love...

I'll start off with my question: Why do we use Gaussian Elimination when inverting a matrix? (this is only one of the methods...which is the only one that doesn't make sense to me). I know how to do it, but I'm not sure why it works. When solving a system of linear equations, I understand...