singular matrix ???? Hi, guys, < in matlab > what should i do if i want to get the inverse matrix but it's a singular one? can i just add a very small identity matrix like 0.00005 on the diagnol? will it change the result? eg: w0 = S\meandiff is that the same as w0 = ( S+0.00005*eye( size( S ) ) )\meandiff thanks!