Error plotting inverse laplace in time domain

Hi

I'm trying to plot a transfer function by first converting it to the time domain. So my laplace function and code is:

syms s
g=((s+5)/(s*(s+3)*(s^2+2*s+6)))
t=0:10; %time domain

a=ilaplace(g) %inverse
plot(t,a(t));

But doing this gives me an error:

??? Error using ==> sym.subsref at 40
Error using ==> maplemex
Error, (in MTM:-subsref) Array index out of range

Error in ==> Untitled4 at 7
plot(t,a(t));

Can someone please tell me what I'm doing wrong?

Answer 1

[bym]

perhaps try

plot(0:10,subs(a,0:10));

[R J]

I tried but it get an error message:

??? Error using ==> sym.subs at 54

Error using ==> maplemex

Error, (in MTM:-subs) invalid input: exp expects its 1st argument, x, to be of type algebraic,

but received Vector[row](11, [0,-3,-6,-9,-12,-15,-18,-21,-24,-27,-30])

[bym]

I don't have an issue, but I am using Mupad as the symbolic engine

a =

5/18 - (11*(cos(5^(1/2)*t) + (23*5^(1/2)*sin(5^(1/2)*t))/55))/(54*exp(t)) - 2/(27*exp(3*t))

y = subs(a,(0:10))'

y =

0.0000

0.2652

0.3092

0.2646

0.2795

0.2788

0.2771

0.2780

0.2778

0.2777

0.2778