Hi I have a transfer function in this form : (a*s^2)/(b*s^3+c*s^2+d*s+e) I have numerical value for a b c and d for example assume a=22 b=45 c=14 d=18 e=29. I would like to find the inverse Laplace in terms of coefficients a,b,c,d and e (Meaning something like a*exp(b*t)+...) . How can I do that since Matlab will give me :
a*sum((r3^2*exp(r3*t))/(3*b*r3^2 + 2*c*r3 + d), r3 in RootOf(b*s3^3 + c*s3^2 + d*s3 + e, s3))
after issuing following command.