Results 1 to 2 of 2

Math Help - Matrix please help stressing!

  1. #1
    Junior Member
    Joined
    Mar 2010
    Posts
    46

    Matrix please help stressing!

    hey there i know it was a while ago but your answer seems clear any chance you know how to get the invertible and diagonal of a 3x3 matrix?? i've got the two eigenvalues and eigenvectors already!!!!



    (just incase you need to know)
    eigenvalues being 2 and -3
    eigenvectors being (-1 over 3 over 1) for 2 and the second one is (1 over -1 over 2) for -3!

    the matrix is a 3x3 its(3 4 -1
    -1 -2 1
    3 9 0)

    dunno do you need to know but i said id write it anyway thanks a lot!!!!!!11
    Last edited by mr fantastic; March 23rd 2010 at 09:01 PM. Reason: Merged posts, removed excessive !'s from post title
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Mar 2010
    From
    Florida
    Posts
    3,093
    Thanks
    5
    Quote Originally Posted by eleahy View Post
    hey there i know it was a while ago but your answer seems clear any chance you know how to get the invertible and diagonal of a 3x3 matrix?? i've got the two eigenvalues and eigenvectors already!!!!



    (just incase you need to know)
    eigenvalues being 2 and -3
    eigenvectors being (-1 over 3 over 1) for 2 and the second one is (1 over -1 over 2) for -3!

    the matrix is a 3x3 its(3 4 -1
    -1 -2 1
    3 9 0)

    dunno do you need to know but i said id write it anyway thanks a lot!!!!!!11
    You can't diagonalize a matrix with an eigenspace less than n. n=3 here. Also, you eigenvector when \lambda=2 is x_3\begin{bmatrix}<br />
-1\\ <br />
1\\ <br />
3<br />
\end{bmatrix}
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: November 27th 2010, 03:07 PM
  2. [SOLVED] Elementary matrix, restore to identity matrix
    Posted in the Advanced Algebra Forum
    Replies: 3
    Last Post: February 13th 2010, 09:04 AM
  3. unitary and upper triangular matrix => diagonal matrix
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: December 10th 2009, 06:52 PM
  4. Replies: 3
    Last Post: March 17th 2009, 10:10 AM
  5. finding check matrix from generating matrix
    Posted in the Advanced Algebra Forum
    Replies: 0
    Last Post: June 3rd 2008, 04:27 AM

Search Tags


/mathhelpforum @mathhelpforum