1. Not finding help here? Sign up for a free 30min 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!

What is a determinant?

  1. Jan 13, 2008 #1
    What does a determinant do exactly (what is it)? And what is the general method of calculating it?
  2. jcsd
  3. Jan 13, 2008 #2
    The determinant is mainly used to determine whether or not a square matrix is invertible. There are other applications as well. (ie. Cramer's rule for determining solutions to a system of linear equations)

    The method used is generally the cofactor expansion. (note link)
    Last edited: Jan 13, 2008
  4. Jan 13, 2008 #3
    hmm...I see...I've practically forgotten the concept of matrices, but thanks. If possible, do you know of a site that simply goes through the fundamentals of matrices? And (this question is slightly random)....what is a lattice point?
  5. Jan 13, 2008 #4
  6. Jan 13, 2008 #5
    Thanks for the help.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?