Recent content by Angello90

That's what I was thinking. Was confused cause it is usual donated it by \oint isn't it? Thanks a million guys! So it turns out to be fairly simple example! Cheers Angello

I don't have any textbook, just lectures notes, who didn't cover the material, as he was sick, but still expect us to know it. Ok so in my case I have one path which can be split into two, the paraboloid path y=x^2 and line y=4 yes? Than I just add both? But I get different answer. The...

Ok. Could you explain that slower? So it's like, you find area under the rectangle x = -2,2 y= 0,4, and than the area under the paraboloid y=x^2 again from x= -2,2 and y= 0,4. Than subtract both answers?

Homework Statement \int_{C} (xy^{2}-3y)dx + x^{2}y dy G is finite region enclosed by: y=x^{2} y=4 C is boundary curve of G. Verify Green's Theorem by evaluating double integral and line integral. The attempt at a solution Q = x^{2}y dQ/dx = 2xy P = xy^{2}-3y dP/dy =...

Hold on, so by saying that s=0, s=-R/L, and assuming that R is and imaginary number and L is real, that eqn has a oscillatory component? My lecture never covered that part of the course, yet he examines on this . Will this hold the fact that R>1/L? Can imaginary number be greater than rational...

Ok I found this extract in the book that my department is using for signals and systems, saying that, Assuming that we have: \frac{A_{1}}{s-\alpha - j\omega_{0}} + \frac{A_{2}}{s-\alpha + j\omega_{0}} can be replaces by: \frac{B_{1}s + B_{2}}{(s-\alpha - j\omega_{0})((s-\alpha +...

But isn't this rather wierd? I would get Y(s) = \frac{1}{s} - \frac{\frac{1}{R}}{\frac{s}{R} + \frac{1}{L}} and than I should transform from Laplace to time domain?

Ok, so should I do the partial fraction expansion as I did and work on: Y(s) = \frac{1}{s} - \frac{1}{s + \frac{R}{L}} or start over? Or... there is no complex component in dominator, therefore there is no oscillatory component? Sorry for being annoying.

viscousflow I don't really see how I could use this. I assume I need to change e^{\frac{-Rt}{L}}u(t) But I don't know how, cause I don't have i. Should I take one i outside? e^{\frac{i.i.Rt}{L}}u(t) Than I would end up with: e^{\frac{i.i.Rt}{L}}u(t) = (Cosh(\frac{Rt}{L}) -...

Homework Statement What is that oscillatory component? And is my answer for the following correct? x(t) = u(t) H(s) = \frac{R}{R + sL} y(t) will contain oscillatory component if R > \frac{1}{L} True or False? Homework Equations Basic Laplace Transform: u(t) \longrightarrow...

Anyone knows at least where can I seek help? Thanks!

Hey guys, I am just wondering, what are the ways to implement decoding via hardware? I have an input of c(x) - encoded message - and g(x) - polynomial generator. I know that by dividing c(x) by g(x), and having no reminder mean that there was no error. I am fine in doing this either by...

Can anyone give me a tip maybe? Thanks!

From the lecture notes: h[n] = \frac{1}{2}(\delta[n] + delta[n-1]) via property: H(e^{j\Omega})=\sum_{-\infty}^{\infty}h[k]e^{-j\Omega k} becomes: H(e^{j\Omega})= \frac{1}{2}(1 + e^{-j\Omega}) than my lecture divided by e^{\frac{-j\Omega}{2}} resulting in: H(e^{j\Omega})=...

I got another problem though. How should I integrate: \int_{-\infty}^{\infty}e^{-(t-\tau)}sin(t-\tau) d\tau I know I can bring one e to the front: e^{-t}\int_{-\infty}^{\infty}e^{\tau}sin(t-\tau) d\tau but what do I do with sin()? I used trigonometric property on it: sin(A+B) =...