Hello

Evaluate

that absolute value makes my life hard.

how can i deal with it?

Printable View

- December 30th 2010, 01:47 PMLiverpoolLaplace transform of |sin(t)| ?
Hello

Evaluate

that absolute value makes my life hard.

how can i deal with it? - December 30th 2010, 01:58 PMpickslides
How about

- December 30th 2010, 02:02 PMLiverpool
?

- December 30th 2010, 02:24 PMpickslides
No it doesn't, I miss read your first post.

I meant to say - December 31st 2010, 01:51 AMchisigma
- December 31st 2010, 04:22 AMKrizalid
i had in mind transforming the integral into i don't know if it works though.

- December 31st 2010, 12:29 PMLiverpool
- December 31st 2010, 01:03 PMDrexel28
- December 31st 2010, 01:05 PMKrizalid
haha, i knew it, it just that the web sites i often use to compute integrals are not computing them so it's too lazy for me to compute them by hand.

- December 31st 2010, 01:10 PMDrexel28
- December 31st 2010, 01:34 PMRandom Variable
- December 31st 2010, 01:38 PMLiverpool
OK Guys

those solutions are too advanced to me

what I know that is |sin(t)| is periodic and I use a program that told me its period is pi

So Am able now to solve that laplace using the formula for finding laplace transform for periodic functions

but the problem here

is How did we know that the function is periodic? - December 31st 2010, 01:39 PMKrizalid
it's an easy mix of telescoping sums and use of FTC.

we claim that

all we need to have is that is given continuous, so it has an antiderivative, then

it's a very useful trick. - December 31st 2010, 01:45 PMRandom Variable
- December 31st 2010, 01:48 PMLiverpool
Its better to answer the original poster then answer anyone else, and the latter should post a new thread if he have any question not asking them in the same thread.

I don't like this.

Respect me!!!!