Recent content by BlkDaemon

I'm working on a similar project, and we're looking at ZigBee and XBee options. Check out: http://en.wikipedia.org/wiki/ZigBee http://www.ladyada.net/make/xbee/arduino.html There's also some info on these sites, but keep in mind that they are business sites looking for sales...

Clarification, from a casual observer Is sine supposed to be squared in dV? If not, why? Also, what's the difference between "evaluating a hemisphere" as stated in the original problem and "finding volume"? When I took VectorCalc, this kind of stuff used to stump me all the time. And...

Another software option is EagleCAD. I haven't used it extensively, but it seems relatively simple to use, compared to some of the simulations software like SystemVision or PSpice. (I realize that's comparing apples to oranges, but I'm only talking about ease of use.)

Gotcha. Actually, I *have* worked with the notation before. What I didn't realize in the problem was that the notation was implied. The problem came from a summary of term definitions in a larger document, and I'm working my way through it. I'm not trying to belabour the issue; I just wanted...

I think part of my challenge is that the originally stated problem does not include "dy" or "dt" and therefore working towards the solution has become a bit convoluted for me. The original problem only says: 2ty' + 4y = 3 Do you guys even see where I'm getting lost? If not, I'll move on...

I get the theory... I understand the theory in the last response, but I got lost on the actual application. Essentially, once I replace y' with dy, I arbitrarily assign dt to the right side of the equation, yes?

Wait, I'm confused again... Essentially, y' is dy. I get that. But where does dt come from? This has me stumped. If I interpret the change from y' to dy as a simple change in notation, I can't just pull dt out of thin air. And when I perform that step, I get: dy/(3-4y) = 1/2t which...

Thanks for the response. Now I see where I missed a step!

I'm creeping my way through DiffEq, and recently started reading Paul Dawkins' PDF, which is actually pretty helpful. He does, however, tend to assume that his readers know how to approach what he calls simple problems. Well, one of 'em has me stumped. 2t*y' + 4y = 3 I need to find the...

MTH 343 Final HA! You mean the one I'm **finally* taking next week?? Loooooong story, man. Ran into Nick yesterday. He's doing alright. Drop me a line sometime. You sticking with PCC or coming back over here?

I'm hacking at this particular linear system: dY/dt = [1, -1; 1, 3] Y I've already found myself a solution using the following function: Y(t) = [ te^(2t), -(t+1)e^(2t) ] That was fun, actually, once I figured out what the hell I was doing. Here's my question: the next part of...

Easier? When?! Well, I'm no genius, so let me tell you that it doesn't get easier. It gets harder, and more convoluted, and everything builds on what you've learned before. BUT, what I can say is that if you don't know how to study when you start, you learn as you go along. You start to...

Close, but not quite... First, thanks for responding. I understand the theory. Believe me when I say I've spent a lot of time staring at the formulas you shared in your post. My problem is that I can't figure out mathematically how to do it. Maybe it's really simple, and I'm just not getting...

I'm an EE student currently taking a Systems & Signals class. I've been searching high and low for information about convolution sums and convolution integrals. (Currently using the Haykin/Van Veen text). Here's my problem: I'm not grokking how the original input signal morphs into the output...

Kinda long. My apologies. IMHO, while it may seem like your only option, teaching yourself Physics is a tricky proposition. Trying to master concepts *while also trying to do the problems* and complete your coursework is pretty tough, and kinda like taking two classes instead of one. Two...