1. The problem statement, all variables and given/known data (Ax = B) A: 3.1410 -2.7180 1.4140 -1.7321 9.8690 2.7180 -7.3890 0.4280 2.2360 -2.4490 1.0000 -1.4140 31.0060 7.3890 -2.6450 0.1110 B: 3.316 0 3.141 1.414 The question in my Numerical Methods assignment asks to use the Jacobi Iterative method to solve the system. 2. Relevant equations The Jacobi Iterative method works ONLY IF a matrix is diagonally dominant. It's not mentioned in my Numerical Analysis textbook. I have only found out about this on wiki.org. I have found out that the matrix A (See above) is not diagonally dominant. So the method will not work on this system (Ax = B). Did I miss something? What should I do? I tried the method very carefully. The solution set doesn't make sense.