Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

missashleyn

If f(x) = 4x + 1 and g(x) = x2 – 2x + 1, what is f(g(x)) ? 4x2 – 8x + 5 4x2 + 2x + 2 x2 + 2x + 2 x2 – 2x + 2

  • one year ago
  • one year ago

  • This Question is Closed
  1. theLiminator
    Best Response
    You've already chosen the best response.
    Medals 2

    4(x^2-2x+1)+1=f(g(x)) 4x^2-8x+4+1=f(g(x)) f(g(x))=4x^2-8x+5

    • one year ago
  2. theLiminator
    Best Response
    You've already chosen the best response.
    Medals 2

    Sub g(x) into wherever x is inside f(x)

    • one year ago
  3. missashleyn
    Best Response
    You've already chosen the best response.
    Medals 0

    That makes no sense to me lol is it the first answer?

    • one year ago
  4. theLiminator
    Best Response
    You've already chosen the best response.
    Medals 2

    yeah

    • one year ago
  5. missashleyn
    Best Response
    You've already chosen the best response.
    Medals 0

    Thank you!

    • one year ago
  6. theLiminator
    Best Response
    You've already chosen the best response.
    Medals 2

    let's call g(x) something you are more familiar with, like g(x) = y, then sub that into f(g(x)) Which gives you f(y)=4x+1

    • one year ago
  7. theLiminator
    Best Response
    You've already chosen the best response.
    Medals 2

    Since you substitute whatever is inside f() into any x you have in your function, you'll get 4(y)+1=f(y) Then just resub y=g(x) = x^2 – 2x + 1

    • one year ago
    • Attachments:

See more questions >>>

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.