1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Solve equation Ax = y, where A and y are known

  1. Sep 25, 2012 #1
    1. The problem statement, all variables and given/known data
    Solve for x: Ax = y.

    A = {{2 0 1},
    {1 1 4},
    {2 2 1}}

    y = {{1},

    2. Relevant equations
    Basic Matrix operations

    I have a vague idea how I'm supposed to do this, but I have no attempt yet.. eigenvalues and eigenvectors come to mind..in some way :frown:
  2. jcsd
  3. Sep 25, 2012 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Three possibilities come to mind:
    Row reduction
    Multiply by A inverse
    Cramer's rule (determinants)

    Try what you know.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Solve equation Ax = y, where A and y are known