A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
evaluate this integral
integral (1cos t/2)^2 sin t/2 dt
u= 1cos t/2
anonymous
 5 years ago
evaluate this integral integral (1cos t/2)^2 sin t/2 dt u= 1cos t/2

This Question is Closed

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0if u=1cos(t/2) then du=1/2 *sin(t/2) dt or 2du=sin(t/2) dt

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0so now we have \[2\int\limits_{}^{}u^2du\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0thats the part i don't get

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0so you are having trouble with derivatives?

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0the derivative of 1 is 0 and the derivative of cos(t/2) is 1/2(1)(sin{t/2})=1/2 sin(t/2)

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0u is a function of t so we have du/dt=1/2*sin(t/2) so by multipling dt on both sides we have du

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok i understand now thanks!
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.