Assignment 3 Marking Scheme and TA Comments (1) For Problem 1, 3, 4, most students did quite well. For some students, a better discussion about the numerical results and the ratios between max_errors, in particular, is needed. I took off 1 point if this was not adequate. (2) For Problem 2, because of the complexity of the B-splines, it is very easy to make minor mistakes in the program, which causes the method to not converge. If the program structure looks fine, but the max-errors do not behave as expected, I took off 4 points. (3) As we explained in the e-mail, because of ill-conditioning of matrix and machine precision, the errors will not decrease by 16 when m increases from 320 to 640. Students should notice and comment on this phenomenon. If they failed to do so, I took off 1 point even if all the max-errors are correct.