Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

bahrom7893

  • 3 years ago

Find the sum of the series. For what variables of x will this series converge?

  • This Question is Closed
  1. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    3+x+x^2+x^3+.... idk what to do about that 3

  2. mathg8
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    3x^0 ?

  3. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    well but the next one should have been 3x and then 3x^2, etc

  4. mathg8
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i see ...

  5. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @TuringTest any ideas?

  6. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hmmm let me read through the book once more..

  7. mathg8
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

  8. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what's that?

  9. mathg8
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    doesn't converge

  10. mathg8
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    By the limit test, the series does not converge.

  11. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    It should though, for some values of x

    1 Attachment
  12. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    #22.

  13. Ishaan94
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    x<1 ?

  14. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    im thinking partial sums or smth..

  15. mathg8
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I need a refresh ... rusty

  16. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    well yea but i gotta find an equation for Sum. and i can't figure out what a is

  17. mathg8
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    http://www.wolframalpha.com/input/?i=3%2Bx%2Bx%5E2%2Bx%5E3%2B....

  18. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    or the other side could be like ((1/3)x)

  19. Ishaan94
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    \[3 + \frac{x}{1-x}\] It only works if x<1

  20. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    math, wolf can't compute this in terms of x. ohhhhhhhhhhhhhh Ishaain u're right.

  21. Ishaan94
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    And I am sure the series will converge only when x<1

  22. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    *Ishaan

  23. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    actually im not sure now

  24. mathg8
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    you should try partial sums ...

  25. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    that 3 is still bothering me.

  26. mathg8
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what if you divide by 3?

  27. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    then a get's screwed 1+(1/3)x+(1/3)x^2, etc..

  28. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    *gets

  29. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @radar can u take a look?

  30. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hmm what if i start with x

  31. bahrom7893
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    duhh that's ishaan's answer, he was right. Thanks guys!

  32. 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.