A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Another integral problem!
anonymous
 one year ago
Another integral problem!

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So I know that the integral is cos^3 (x) / 3 + c for the integral of cos^2 (x) * sin(x)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So the first part would be zero because 2/3  2/3 is 0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0But what about the second part? Wouldn't that just be adding 1/3 and 1/3 together to get 2/3?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.2For the second part, you need to honor the absolute bars, for what values of `x`, is the expression `cos^2x*sinx` negative ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0When x is pi/2 to 3pi/2

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.2dw:1436014008840:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh wait I read it wrong

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.2so simply evaluate the integral between (0, pi) and multiply by 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And then for the last part we just multiply 4/3 by 30~

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0^however how does this work? just multiplying it by 30...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Because I don't think you would be able to do that in a another integral about has bounds...

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.2you must be knowing that definite integral can be interpreted as "signed area under the curve" ?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.2Look at the graph, it clearly repeats every 2pi, yes ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah.... it's summer.... thank you!
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.