Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

help_needed

  • 3 years ago

Find the linearization L(x) of the function at a. f(x) = x^4 + 4x^2, a = −1

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

    I keep getting F(x) = f(x) = -12x - 8 as my asnwer but it's wrong :(

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

    is this right? \[L(x)=f(a)+(x-a)f'(a) \]

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

    yes

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

    so we have a=-1 and\[L(x)=f(-1)+(x+1)f'(-1)\]how about this one ? make sense?

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

    i think u got it from here :)

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

    yeah but thats exactly what i do but the asnwer sumhow is wrong

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

    f(-1) = 5 and f'(-1) = -12. So it becomes 5 + -12(x+1) = -12x + 8

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

    and it keeps marking it wrong

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

    idk what im doing wrong here

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

    lemme check

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

    srry that shud be -12x -8

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

    i got ... -12x-7

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

    WOWW IM SUCHHH A FAILLURE...OK wow i cant beleive i got the calc right and algebra wrong

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

    thank u lol i really cant beleive i got this wrong

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

    no problem ..it happens sometime :)

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

    ok but this one its not about the algebra. Im just cnfused how to do it. Do u mind helping if i post it

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

    ah sure :)

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

    Thanks im posting it as a dffnt question

  19. 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