Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Dodo1

  • one year ago

curve problems?

  • This Question is Closed
  1. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 Attachment
  2. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Do you know what the graph looks like?

  3. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    No, I have no idea!

  4. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Well it might be a good idea to sketch a graph

  5. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    would it possible to solve the problem without a graph?

  6. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    would it be

  7. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Well yes but it be a bit harder since we don't know which graph is higher

  8. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh i see... how do you draw a graph

  9. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    wait, are you finding total area or net area?

  10. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    it says find the area between the curves?

  11. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    If I'm not mistaken then the graphs should look like this when graphed |dw:1366855841011:dw|

  12. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sin and cos graph?

  13. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Uhm no, the ends of the graph go off into infinity after they have intersected

  14. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Oh.

  15. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Now, do you notice anything about the two graphs?

  16. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -they get smaller and smaller? -they intersects

  17. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Well yes but also they are reflections of one another

  18. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes,

  19. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So that means that whatever area on graph has the other has the opposite area. Such as -x and x.

  20. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes,

  21. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So that means the area would be zero

  22. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the answer is zero?

  23. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i thought i need more calculations

  24. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Well you could if you want but the answer would still be zero. These two graphs are going to cancel each others area out

  25. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i entered zero into the answer but it tells me that it was wrong

  26. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Well let's solve it right now, do you know how to set it up as an integral?

  27. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    No, I have no idea!!

  28. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Luigi0210

  29. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Sorry I was trying to evaluate the problem

  30. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    but anyways we would set up the problem like this: \[\int\limits_{0}^{9} (x^3-14x^2+45x)-(-x^3+14x^2-45x) dx\]

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

    I'm betting that they want you to set up two different integrals...based on the two enclosed regions.

  32. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so between...= minus. i got it

  33. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Setting up two equations would take a bit longer

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

    http://www.wolframalpha.com/input/?i=area+between+x^3-14x^2%2B45x+and+-x^3%2B14x^2-45x

  35. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    whats next step?

  36. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    The answer I got was 253/2..

  37. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    *243/2

  38. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the answer was wrong but thanks for ur help!

  39. Luigi0210
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I'm sorry I couldn't help you solve it..

  40. Dodo1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    No thanks for your time!

  41. 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.