Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

duckiness

  • one year ago

Does the series cos n /(n^3) converge or diverge?

  • This Question is Closed
  1. modphysnoob
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    n^3 would converge

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

    what test would you use to prove it?

  3. modphysnoob
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    p test

  4. modphysnoob
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I am assuming it is from 1 to infinity

  5. xkylex
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes, it would be converge

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

    yep! I just don't know how to prove it with a test

  7. xkylex
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    http://mathforum.org/library/drmath/view/74703.html

  8. modphysnoob
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    start with just 1/n^3

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

    could you use the comparison test?

  10. modphysnoob
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yes, 1/n^3 always converge

  11. modphysnoob
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    cos (x)<1

  12. xkylex
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    It does not require a paragraph of an explanation, you could either use the link I showed you for an example as they do some hardcore calculating or you can follow what modphysnoob is doing.

  13. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find 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
  • 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.