Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Studentc14

  • 2 years ago

functions: If f(x)=x^2-x+1, solve: 1) f(x+1) 2) f(-a) 3) 2f(x)-2 4) f(2x)

  • This Question is Closed
  1. Studentc14
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    CAN I post my answers and someone check it?

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

    you mean "evaluate"?

  3. Studentc14
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    probably, sorry

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

    yeah, lol, just substitute whatever is in f(whatever is in here)

  5. kmalone99
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes i'll check it

  6. Studentc14
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1) x^2+x+3 2) -a^2+a+1 (i didn't know if there was any way to simplify this? 3) 2x^2-x 4) 2x^2-2x+1

  7. kmalone99
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    all wrong, it three right 2 f(x)-2?

  8. Studentc14
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    its 2*f(x) -2

  9. Studentc14
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    can you show me how to do them then?

  10. kmalone99
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes

  11. kmalone99
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    jaersyn i got this

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

    all yours kmalone99

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

    <_<

  14. kmalone99
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[1) f(x+1)= (x+1)^{2}-(x+1)+1\] \[=(x+1)(x+1)-x-1+1\] \[=x ^{2}+2x+1-x=x ^{2}+x+1\]

  15. Studentc14
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Ok, I get #1. I just didn't distribute the negative sign.

  16. kmalone99
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    2) f(-a)=\[f(-a)=(-a)^{2}-(-a)+1=a ^{2}+a+1\]

  17. kmalone99
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    now retry 3 and 4

  18. Studentc14
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i got 2... i dont see what went wrong with 3 and i dont know how to simplify 4

  19. Studentc14
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    wait- 3 should be 2x^2-2x?

  20. kmalone99
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    great now on four you just did not square the 2

  21. Studentc14
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh! so it would be 4x^2-2x+1 ?

  22. kmalone99
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes great job you get A+

  23. Studentc14
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yay! lol I just always make silly simplifying mistakes or I miss a sign or something simple like that. Oh well, thanks very much ^_^

  24. Not the answer you are looking for?
    Search for more explanations.

    Search OpenStudy
    • 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.