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can matlab find ilaplace

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MINATI
MINATI on 28 Apr 2019
Commented: MINATI on 29 Apr 2019
F1=ilaplace(exp(-y*sqrt(s+a))/s);
pretty(F1)

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Accepted Answer

Walter Roberson
Walter Roberson on 28 Apr 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

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MINATI
MINATI on 29 Apr 2019
Ok Walter let me check
Any way thanks for replying

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More Answers (1)

TADA
TADA on 28 Apr 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 Comments

MINATI
MINATI on 28 Apr 2019
@TADA
Yes a and y are constants
but desired answer not came by running your code
TADA
TADA on 28 Apr 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 on 28 Apr 2019
From what I can see, there seems to be a general difficulty with exponents

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