A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

How many sign changes are in the polynomial f(x) = 3x3 - 7x2 - 9x + 1

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[+3x ^{3} - 7x ^{2} - 9x + 1\] Therefore, there would be 3 sign changes.

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

    2 I mean

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

    how would did you do that

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

    |dw:1435260258282:dw|

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

    It goes + - - + So you start at + and go to -, that is one sign change. Then - to -, that is the same so no sign change. Finally - to + which is a sign change therefore you have 2 sign changes.

  6. 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

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.