Result ilaplace a number

Hi,

from this code:

   a=55/4/sym('s^2');
   b=ilaplace(a);

I got:

   (55*t)/4

How can I get result like 13,75*t????

Thanks

Answer 1

[Azzi Abdelmalek]

double(coeffs(b))

[john]

Hm...but if:

   b=(55*t+4*t^2+3*t^3+2+exp(t))/4;

thant I get: 0.5000 0.2500 13.7500 1.0000 0.7500

But how can I use this result? How can I connect individual result to the responding variable? Or how can I create result in form:

0.5+0.25*exp(t)+13.75*t+t^2+0.75*t^3

Thank you

[Azzi Abdelmalek]

syms t
b=(-55*t+4*t^2+3*t^3+2+exp(t))/4
[ii,jj]=coeffs(b)
s=[]
for k=1:numel(ii)
  s=[s sprintf(['%0.5g*' char(jj(k)) '+'],double(ii(k))) ]
end
s(end)=[]
s=regexprep(s,'+-','-')
s=regexprep(s,'*1','')

[john]

[1, t] means always exp(t)?

[Azzi Abdelmalek]

what do you mean?

[john]

In variable "b" exist exp(t)/4...but result is 0.25*[1, t]....so [1, t] means always expression "exp(t)"?

Answer 2

[RahulTandon]

a=55/4/sym('s^2'); b=ilaplace(a); vpa(b) % this will give you the complete answer!