A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
Show the procedure for finding the transform of f(t)=cos5tsin5t
anonymous
 5 years ago
Show the procedure for finding the transform of f(t)=cos5tsin5t

This Question is Closed

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0It doesn't say but thats what I'm guessing since thats what we've covered.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You haven't covered Laplace?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Series and Sequences are my absolute weakness.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I have covered LaPlace as well.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0That was our last week of my class

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Its a short answer type question though so I'm not sure what it means by transform.. the only 2 I can recall are fourier and laplace

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yeah I have like 20 more questions, but they are much more simple.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The answer's going to depend on whether it's Fourier or Laplace, that's the problem.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Well wouldn't fourier be a series? Which would give me an interval?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I have to leave for a bit  bad timing. I'll try and be back before your three hours is up.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Cool thanks dude. No problem

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I can do it quickly if it's Laplace transform.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I haven't done any Fourier transform in a while.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I don't think we did Fourier transforms, we did Fourier Series.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0They are different right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ok well I guess its a laplace because I haven't done any transform other than LaPlace

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0It would be easy then. do you use a Laplace transform table? or should I solve using the definition of Laplace transform?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0We use transform tables usually....

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that's good.. we will just use two formulas, which are: \[1) L[\sin kt]={k \over s^2+k^2}\] \[2) L[\cos kt]= {s \over s^2+k^2}\] where L[f(t)] denotes the Laplace transform of f(t).

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0do you think you can apply these two formulas?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Hmm Let me see... I'm really not fluent in using the table as it was our last topic discussed in the class.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Wouldn't I just substitute K for the cosine and sine values?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeah k in this case is what?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0OK.. show me what you get.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0but I can factor the bottom if I wanted

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0are you sure about factorizing the bottom?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0f(t)=5s/s^2+25 final solution.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.01) well what is the Laplace transform of f(t)? 2) is it 5s or s5?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0s5 I read it inccorectly

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok.. the notation that's usually used to denote a function after being transformed is uppercase letter, in our case it will be: \[F(s)= {s5 \over s^2+25}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Oh right... because you're transforming it in terms of f(t) and s... I recall that now.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0if you're asking about how you can get the formulas (which is the most important part of the answer), you can just use the definition and integrate for the first one: \[\int\limits_{0}^{\infty}{\cos (kt)} e ^{st} dt\] the result of this integral (can be integrated using integration by parts) is, by definition, the Laplace transform of cos (kt).

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Right which will help me build a transform table if I didn't have one available?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Sweet tthanks a lot :)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.