can matlab find ilaplace

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MINATI
MINATI le 28 Avr 2019
Commenté : MINATI le 29 Avr 2019
F1=ilaplace(exp(-y*sqrt(s+a))/s);
pretty(F1)

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Walter Roberson
Walter Roberson le 28 Avr 2019
MATLAB is not able to find the inverse laplace transform of that.
Maple can find it in terms of an integral, when the assumption that y > 0 is added.
Mathematica can find it in terms of erf and erfc
  1 commentaire
MINATI
MINATI le 29 Avr 2019
Ok Walter let me check
Any way thanks for replying

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TADA
TADA le 28 Avr 2019
Try that:
syms s;
F = exp(-y*sqrt(s+a))/s;
F1 = ilaplace(F);
pretty(F1);
I don't know what a and y are in your case, I assumed constants, but you might need to declare them as symbolic variables as well...
  3 commentaires
TADA
TADA le 28 Avr 2019
Now I see it doesn't resolve...
I think some functions cannot be resolved using ilaplace but I'm not an expert
My apologies
TADA
TADA le 28 Avr 2019
From what I can see, there seems to be a general difficulty with exponents

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