This is such a basic topic but there are so many different methods proposed for solving a linear system of equations. I recently found a very good source but couldn't really make sense of all the stuff it contains.If I had to pick only 5 methods that I should understand thoroughly for solving big systems of linear equations which would they be? And what would be the most important reason for each choice? I.e. direct methods?gauss-siedel?conjugate gradient?...Thanks in advance for the help.
Methods for solving linear systems
linear algebra;matrices;linear system