I am struggling with the code below
Kindly, can you provide the correct code for the above calculations. Many thanks in advance
If I call
InverseLaplaceTransform[1/(s + ak[s]), s, 0.2]
it works forever, but I don't get the input back. From a cursory look, it seems that you are nesting three levels of NIntegrate. It is not surprising that it takes forever.
NIntegrate