From: Norah Finocchiaro on
Hi, I am italian...sorry my English language ;)
I have a transfer function G (s) = 3b / ((s ^ 2 +2 * s +3) (s +1) (s ^ 2 + s + a * b)) with 0<a<200 and 0<b<200
I must calculate the singular values and then I must set s=sigma1-sigma2+sigma3-sigma4+sigma5. I must use the command "imagesc" to graph results.

My problem is using this command imagesc..I don't knows how to do...help me please.