Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Mathematics (https://www.askmehelpdesk.com/forumdisplay.php?f=199)
-   -   Linear algebra (https://www.askmehelpdesk.com/showthread.php?t=410838)

  • Oct 29, 2009, 07:01 AM
    sagar12345
    linear algebra
    Let A be a 3*3 matrix with eigenvalues 1,-1 and 3.then
  • Oct 29, 2009, 07:05 AM
    sagar12345

    Find the critical points of the function f(x,y)=x^3+y^2-12x-6y+40 test each of these for maximum and minimum
  • Oct 29, 2009, 08:20 AM
    galactus
    Quote:

    Originally Posted by sagar12345 View Post
    Let A be a 3*3 matrix with eigenvalues 1,-1 and 3.then

    Then? What are you supposed to do?

    Find the characteristic polynomial? I don't know.

    A 3 by 3 matrix will have a cubic as a charpoly.



    Do you have to find the eigenvectors? Let us know what you need to do. We are good, but not mindreaders.:D
  • Oct 29, 2009, 08:21 AM
    galactus
    Quote:

    Originally Posted by sagar12345 View Post
    Find the critical points of the function f(x,y)=x^3+y^2-12x-6y+40 test each of these for maximum and minimum

    Assistance given in other post regarding same problem.

  • All times are GMT -7. The time now is 08:40 PM.