A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

amurciano2

  • one year ago

How would you dinghies question. I have the work, but I can't find a mistake.

  • This Question is Closed
  1. amurciano2
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Here is my work.

    1 Attachment
  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1441657409641:dw|

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You must use cos (2t) = 1-2sin^2 t so that sin^2 t = (1/2) - (cos (2t))/2 to plug in the integral. One more thing: if you let x = 2 sin t, then t = arcsin(x/2) , the limits change also when x = 0 , t = ...., x =1 , t=.... Replace all to work.

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Don't forget, if x from 0 to 1, t < pi/2

  5. amurciano2
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    We're did you get the cos(2t) from?

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That is an identity

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    http://www.purplemath.com/modules/idents.htm at "double angles identity"

  8. amurciano2
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Where is the double identity in the work?

  9. amurciano2
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I see it. Thank you!!!!

  10. amurciano2
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I retried it. Do you still find a mistake?

    1 Attachment
  11. amurciano2
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I found one mistake. The answer is till not right though. :(

    1 Attachment
  12. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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
  • 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.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.