A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

HELP!!! PLEASE!!! the question is to DETERMINE all critical points for the following function. f(x)= 2x^2 - 216*sqrt(x) PLEASE PLEASE HELP!! thank you!

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

    take the first derivative and find where f'(x)=0

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

    i did and then i got 4x-108/sqrt(x) and then when u subsittute x=0, you get 0/undefined...and then how would you get the other critical value??

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

    set your derivative to zero, dont plug zero in for x

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

    then solve for x

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

    so how do u do that? i dont get how to solve for x...

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

    would it be 9?

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

    hey! i got it! :DD thx for your help!

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

    k

  9. 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.