1. The problem statement, all variables and given/known data Evaluate the number of iterations that are needed to have 10^-9 precision with the Jacobi, Gauss-Seidel, and SOR ( with ω=1.5) methods. Compare these 3 methods for different values of n - for instance 3≤n≤20. Plot the convergence curves for the 3 methods for each n. 2. Relevant equations Just the regular formulas for each, I guess. http://en.wikipedia.org/wiki/Jacobi_method etc. 3. The attempt at a solution No idea how to do it. Let's start with Jacobi. What is exactly the n here and where do I plug it in? I don't understand it. I guess you just plug in the 3≤n≤20, calculate the result and then plot the curve. For Jacobi, is the Matrix A the n in this case? Help is very much appreciated!