A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
I need help on the intergral of cos (pi/20) :S
anonymous
 5 years ago
I need help on the intergral of cos (pi/20) :S

This Question is Closed

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0in your integration there is no variable please write the question properly.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the full question is, pi/10 x cos (pi/20)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i think \[\int\limits_{}^{}\cos \pi x/20dx\] let \[y=\pi x/20\] after this substitution you will get dx=20 dy/pi\[20/\pi \int\limits_{}^{}\cos y dy=20\sin y/\pi =(20/\pi)\sin (pix/20)\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0see if there is no x under cosine function then it is simply a constant and you can take it outside the integration

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0have you got your answer?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0if you have any doubt please ask.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0are you talking in general or you haven't understand any step of mine?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0General. Your steps helped alot.
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.