Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

onegirl

  • 2 years ago

Find all critical numbers by hand. If available, use graphing technology to determine whether the critical number represents a local maximum, local minimum, or neither. f(x) = x^4 - 3x^3 + 2

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

    @rajathsbhat can u help?

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

    not too sure about this :\

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

    ok

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

    @electrokid can u help?

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

    are you allowed to use calculus for this? or algebra 2?

  6. modphysnoob
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    take derivative

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

    okay the derivative is x^2(4x - 9)

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

    or 4x^3 - 9x^2

  9. modphysnoob
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    set that equal to 0 and solve for x

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

    okay

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

    i get 0 and 9/4

  12. modphysnoob
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    that's your criticle number

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

    okay so thats it?

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

    how do i determine whether it is local maximum, minimum or either

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

    neither*

  16. modphysnoob
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    1)Plug in Crit point into F''(t); positive number mean min, negative number mean max

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

    okay thanks

  18. 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.