Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

mathcalculus

  • 2 years ago

finding critical points with polynomial functions (attached)

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

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

    is it possible to use quadratic formula for this since it can't be factored...?

  3. abb0t
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    To find critical points you need to take a derivative.

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

    okay, so -6x-7

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

    @abb0t

  6. abb0t
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Now, set it equal to zero and find the roots. Those value(s) are your critical point(s).

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

    i found one.

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

    @abb0t

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

    x=-7/6

  10. abb0t
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes,

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

    critical point is ((-7,6),0)?

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

    it's marking me wrong.

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

    @abb0t

  14. abb0t
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    why is it 0 when you clearly found the value to be \(\frac{7}{6}\)...

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

    that's the problem.. after i find the critical point what do i do?

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

    @abb0t

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

    how would i write the point?

  18. abb0t
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    That is your only critical point.

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

    just plug into original function?

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

    yes but it has to be written as a point @abb0t

  21. abb0t
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes, plug it into original.

  22. 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