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

moser90 Group Title

Solve the system of equations using matrices. Use Gauss-Jordan elimination 3x-7y-7z = 7 6x+4y-3z=67 -6x-3y+z=-62

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. across Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Hint:\[\begin{bmatrix} 3 & -7 & -7\\ 6 & 4 & -3\\ -6 & -3 & 1 \end{bmatrix}\begin{bmatrix} x\\ y\\ z \end{bmatrix}=\begin{bmatrix} 7\\ 67\\ -62 \end{bmatrix}.\]

    • 2 years ago
  2. moser90 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so does x = 7

    • 2 years ago
  3. nincompoop Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    hmm

    • 2 years ago
  4. nincompoop Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    did you use Michael Jordan Elimination method to arrive at x=7?

    • 2 years ago
  5. moser90 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    the book I am using is really confusing it says I have to get 1 on top but I don't know how

    • 2 years ago
  6. nincompoop Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    http://ceee.rice.edu/Books/CS/chapter2/linear44.html

    • 2 years ago
  7. moser90 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I see how to do it when the number is 0 or 1 but I don't know how to start with the 3

    • 2 years ago
  8. psi9epsilon Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @across almost gave you the cramers rule use it to find values of x, y, and z

    • 2 years ago
  9. nincompoop Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    http://www.karlscalculus.org/cgi-bin/linear.pl

    • 2 years ago
  10. moser90 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    okay I used that but my answers I think are what is confusing me these are my choices a. {(7,1,7)} b. {14,7,-7)} c. {(-7,7,14)} d. {(7,7,1)}

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

    If you have choices, all you have to do is substitute, I mean, slam-dunk them and check!

    • 2 years ago
  12. moser90 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I did that and none of them equal up

    • 2 years ago
  13. moser90 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    that is the way they are

    • 2 years ago
  14. Hero Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I'm interested in knowing that this Michael Jordan method is

    • 2 years 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.