Hello and good job for the software.
I'm using it on a PPC phone, but I have a little question.

I'd like to know how to do a product between two matrices like these:

1/s, 1/[s(s+1)], 0, 0
0, 1/(s+1), 0, 0
0, 0, 1/(s+1), 0
1/[s/(s+2)], 1/s, -1/(s+1)(s+2), 1/(s+2)

and:

0
1
1
0

Hi. I don't see a problem. Here is the calculation:
[LIVE width=444 height=192]http://smath.info/live/?file=465[/LIVE]
(just don't forget to use Symbolic Calculation button (->) instead of simple "=", see the example)

Great, really thank you!