Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

AravindG

  • 2 years ago

find maximum and minimum values for the function g(x)=x^3-3x

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

    @hartnn

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

    what u got as first derivative ?

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

    3x^2-3=0 x^2=1 x=1,-1

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

    should i take second derivative?

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

    correct. here u can just put the values in g(x) and by inspection u can tell which is max

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

    mathematically, u should take 2nd derivative...

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

    max at x=-1 and minimum at x=1

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

    bt then why we took second derivative in last qn?

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

    because we can't find the max or min just by putting the points and inspection, can we ?

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

    i see is my final answers ryt?

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

    ....

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

    u dr??

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

    sorry, got disconnected...yes, its correct

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

    one last qn and i am done ,,well for this qn i think i gt crct anser bt i want t o knw if i need to take second derivative "find maximum and minimum value of 3x^4-8x^3+12x^2-48x+25

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

    ,,,

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

    yes, u need to..

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

    are answers 0 and 2?

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

    mim at x=2

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

    max at x=0 min at x=2 ryt?

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

    yes, both are correct..i had doubt with max at x=0

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

    thanx a lot!!!! it really helped cant tell u hw thankful i am !!

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

    seeya gn8 sweeet drms

  23. 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.