Re: Question on Matlab's ss2tf function

Looking at the ss2tf function was how I got the above function for the
numerator. My question is how is it derived. Normally the transfer
function is given as C inv(sI-A)B +D. Substituting the adjoint and
determinant for the inverse allows you to determine the denominator
polynomial. So how do you go from the above formula to the numerator
polynomial?

Cheers,
Dave