A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Empty

  • one year ago

We can define a certain parabola by saying it goes through the points (0,0), (1/2,1), (1,0). I know the answer to this. However I don't understand why this method fails:

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

    \[\left[ \begin{array}c 0 & 0 & 0\\1/4 & 1/2 & 1\\1 & 1 & 1\\\end{array} \right]\left[ \begin{array}c a\\ b\\ c\\\end{array} \right] =\left[ \begin{array}c 0\\ 1\\ 0\\\end{array} \right]\] I can't invert this matrix!

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

    i can't make head or tails of what that is supposed to do

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

    Waittt.t.... I just realized my problem

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

    I put a full 0 vector in that top column, the last one should be a 1.

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

    this is way way too much work to solve this very easy question, right?

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

    Ahhh so it just represents the system of equations from plugging in the points to: \(ax^2+bx+c = f(x) \) Yeah you're right the best way I found to do this is we are given two roots so we write: f(x) = k(x-0)(x-1) and plug in the point f(1/2)=1 to solve for k.

  7. 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.