Recent content by ƒ(x)

I wouldn't have it on all the time, just for demos.

Yeah, similar to that. It wouldn't have to be on for very long. 1 - 1.5 second bursts should be enough.

Halloween is fast approaching, and I'm stuck here without any good costume ideas. Someone suggested that I be a Jedi, but a Sith is more appealing. And even then, I'd want to go all out. Would it be possible to make a glove with special pads in the fingertips and get electricity to arc...

Homework Statement Solve (z+1)^5 = z^5Homework Equations None The Attempt at a Solution z^5 + 5z^4 + 10z^3 + 10z^2 + 5z + 1 = z^5 5z^4 + 10z^3 + 10z^2 + 5z + 1 = 0 5z^3(z + 2) + 5z(2z + 1) = -1 I'm not quite sure how to go about solving this. Expanding, canceling terms, and then factoring...

Homework Statement I'm going to try drawing the circuit. Numbers are added to it for reference. I apologize for the formatting. I'm not sure how to do white space. Edit: for VB the + is on top. VA and VB are switches. I need to figure out the voltage across VA and VBB when they are: 1...

I think I'm supposed to do x(t) * xc(t) and then the next step is to use a step function of sorts. The point is to recover xc(t) since that's the original signal. Edit: My mistake, I was misreading the problem. You're correct. I'm supposed to recover xm(t).

Homework Statement Synchronous demodulate x(t). Homework Equations xc(t) = cos(2pi*fc*t), fc is the carrier frequency xm(t) = cos(2pi*fm*t), fm is the modulation frequency x(t) = xc(t)*(1+m*xm(t)), m is the modulation index m = .8 fc = 2000 hz fm = 200 hz The Attempt at a Solution I...

You mean it will alternate between 0^2 and 1^2 then?

Homework Statement Show that there exist nowhere continuous functions f and g whose sum f+g is continuous on R. Show that the same is true for their product. Homework Equations None The Attempt at a Solution Let f(x) = 1-D(x), where D(x) is the Dirichlet function Let g(x) = D(x)...

So, for a different problem, part (c) on the link, I have: lim x^3 + 2x + 1 = 4, x --> 1 Let ε > and L = 4 |x-1| < δ, |x^3 +2x - 3| < ε But this one doesn't factor...[EDIT] wait, yes it does (I peeked at the solution, how do I factor this by myself?). |x-1||x^2 + x + 3| < ε

Can you explain yourself a little further? I tend to be rather slow about this kind of thing.

For part A, (described here: http://www.cramster.com/solution/solution/1157440) I don't understand why they say |x-2| < 1 and why \delta = min{1,ε/5} In case you can't view the page: lim x2+2x-5 = 3, x \rightarrow 2 Let ε > 0 and L = 3. |x2 + 2x -5 -3| < ε |x2 + 2x - 8| < ε |x+4||x-2| < ε...

We didn't think of anything specifically for hydrothermal vents. My group ended up doing an experiment with chemosynthesis.

Thanks for all the replies! Turns out I've outgrown the dress shirt. I should have tried buttoning the top button before the day of the interview. So, I had to ditch the tie.

The argument reached the point where she said something along the lines of "Thank you for your views. This has been very interesting."