Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

jmallis Group Title

The graph of the function has more than one turning point. Use the graphing calculator to find the coordinates of the turning point that lies in the given interval. f(x)= 7x^3 -9x^2 -x+1, [-1, 10] The coordinates of the turning point are

  • one year ago
  • one year ago

  • This Question is Closed
  1. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Is this calculus?

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

    College Algebra

    • one year ago
  3. sauravshakya Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Find f'(x)

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

    The asker said algebra, so presumably that means no calculus allowed.

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

    So what do I do?

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

    it would certainly be a much easier calculus problem not sure I know a method for this using only algebra, I'll have to think on it...

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

    ok

    • one year ago
  8. sauravshakya Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Graph it

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

    that's all I can think of too

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

    And the calculus way?

    • one year ago
  11. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    find x=a such that f'(a)=0

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

    ...in the given interval

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

    http://www.wolframalpha.com/input/?i=plot+y%3D7x^3+-9x^2+-x%2B1

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

    ok so what would the coordinates of the turning point?

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

    It says "Use the graphing calculator to find the coordinates of the turning point that lies in the given interval"

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

    wow I managed to not even read the post :P thanks cinar

    • one year ago
  17. jmallis Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I dont have one

    • one year ago
  18. cinar Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    (:

    • one year ago
  19. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    the website wolfram alpha is a pretty good one http://www.wolframalpha.com/

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

    that site serves as a graphing calculator

    • one year ago
  21. jmallis Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    laptop blocked it

    • one year ago
  22. cinar Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    http://answers.yahoo.com/question/index?qid=20091030113220AAieoZy

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

    that method again requires calculus your three options are to buy the graphing calculator, get wolfram working on your laptop, or learn calculus besides that I have no ideas

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

    I guess you have to use derivative

    • one year ago
  25. cinar Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    they are roughly (0.9,-2) (0.1,1) but exactly

    • one year ago
  26. jmallis Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    It was (-0.05, 1.03)

    • one year ago
  27. cinar Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    http://www.wolframalpha.com/input/?i=max+y%3D7x^3+-9x^2+-x%2B1

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

    wolfram disagrees o_O

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

    http://www.wolframalpha.com/input/?i=min+y%3D7x^3+-9x^2+-x%2B1

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

    that's right, I just used my eyes (:

    • one year ago
  31. cinar Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    (-0.05,1.03) and (0.91,-2.09) these are your answer..

    • one year ago
  32. cinar Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I made typo for this they are roughly (0.9,-2) (0.1,1) but exactly

    • one year ago
    • Attachments:

See more questions >>>

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.