Recent content by brendan_foo

Hi guys, I wish to maximise the following expression subject to the constraint that \|\underline{w}\| = 1, and \mathbb{R} is fixed. P = \underline{w}^H \mathbb{G}^H\mathbb{G}\underline{w} = \underline{w}^H \mathbb{R} \underline{w} where \mathbb{R} \triangleq...

Thanks! I guessed this was so, I tried using MATLAB to create such a convolution of sinc( ) functions and as the length got arbitrarily large the results were convergent to the theory. The practicalities of actual implemented DSP are very interesting indeed it seems. All of this is for...

http://s188.photobucket.com/albums/z65/liznbren/stuff/?action=view&current=envelope.jpg" If I sample at just fractionally above the Nyquist rate, and I obtain a sequence as is shown in the linked image, is it reasonable to expect perfect interpolation (say with a Sinc function ideally) as it...

I am almost sure that it is... Is this one of these occasions that I'm going to have to slug through it and feel good at the end if/when I get to the desired result? This is just a possible question that may be posed, to determine a far E/H field using Huygen's principle and the argument passed...

Absolutely, and this general "Fourier property" indeed comes from the expansion into what I have listed above...the sum of sinc functions. This is not the problem I am having. I am aiming to some how combine that sum of Sinc functions into a single trigonometric function. I am lead to believe...

Hey folks, I'm just searching for a generalized result here. Due to lack of note taking I am in a bind for this Fourier transform. The transform is... \int_{-a/2}^{a/2} \cos (\frac{\pi x}{a}) e^{-j\beta s x} dx . Of course, this is a general Fourier transform, although variables such as f...

I quote verbatim from the cherished one... It wasn't a book exercise, it was a quiz devised by some one.

I can 100% see this; but when faced with a) b) or c) and nothing in between, it seemed a little peculiar, especially with her screaming down my neck that it MUST be one of the three, even though it clearly isn't. Thanks guys, just wanted to get some confirmation before I got on my high-horse...

Again, this is what I argued - however, as a multiple choice question as: left cont, right cont, or continuous in both senses...how is one to answer?! This is the point that I make.

Quick other point: It then asks...is the function left continuous, right continuous or continuous at the point x = 0. Based on the definition of continuity, that is, \lim_{x\to a}f(x) = f(a) Based on the two stipulated limits (as is posted above), what could I say in this case, as the...

This is what I argued, but wasn't received with much gratitude. Thankyou for this... Cheers...Brendan

Hi there, Only a slight problem here... My girlfriend has just taken a calc 1 quiz and she's presented this problem to me which goes against the grain of what I know - however, I could be hideously mis-informed. She was asked to draw a graph of a piece-wise function given some definitions and...

Yes, certainly so! Again, I should have stipulated my argument of the DC case. I just conjoured up a mental projection of a person of great stature and abnormal tolerance to shock and a mineral deficiency getting in the path of a DC line and eventually having some balloons sticking to him due...

Definitely a possible scenario that I considered, the case where the electrocution process occurs during a time frame where the body borne ions are still in a configuration where they could be charge carriers. So the assumption is on a long duration of transient current, by which time the...

Hi folks, I was just looking into conduction as part of an electric shock, as in, the flow mechanism, when I ran across an article about such things, which states: "However, NO ELECTRONS FLOWED THROUGH YOUR BODY AT ALL. The electric charges in a human body are entirely composed of positive...