OpenStudy (anonymous):

For a Cosine function with amplitude =0.75 and period =10 , what is y(4) ?

5 years ago
OpenStudy (anonymous):

$y (t)= Acos(\omega t)$ where A = amplitude $\omega = angular.frequency= \frac{2 \pi }{T}, T = time.period$

5 years ago
OpenStudy (anonymous):

5 years ago
OpenStudy (anonymous):

are you asking me or telling me? :P

5 years ago
OpenStudy (anonymous):

Sorry. I am telling you what I found the answer to be. Thanks so much for your help!

5 years ago
OpenStudy (anonymous):

The answer actually depends on the initial conditions!.. that is y(0)

5 years ago
OpenStudy (anonymous):

That is the answer I submitted and got credit for. there was only one correct answer, which was 0.601. it was a tough problem. once again, I really appreciate for help! Have a great day.

5 years ago
OpenStudy (anonymous):

good to hear that.. your welcome :) you should close this question now.. to let people know that you are satisfied with the answer!

5 years ago
OpenStudy (anonymous):

I am new to this. How do I do that? and How do I change my username?

5 years ago
OpenStudy (anonymous):

you have an option.. press CLOSE question!

5 years ago
OpenStudy (anonymous):

okay. i think I was able to close it.

5 years ago
OpenStudy (anonymous):

yes correct!!

5 years ago
OpenStudy (anonymous):

how do i change my username

5 years ago
OpenStudy (anonymous):

or can you direct me to the right person that can help me with changing my username. thanks

5 years ago