Hi everyone,
This is a question involving the functioning of the numerical integration operator in MathCAD 13.
In my worksheet I am solving a complex problem which involves numerical integration of multiple periodic functions.
While testing the solution, I am varying the parameter TOL between 10^-3 and 10^-15 to see which influence it has on the results. Now, one would think that, as TOL decreases, the solution should go to some sort of convergent point. But, as one can see in the attachment, the solution first is convergent, than starts to deviate and seems to go to a convergent solution again.
My suspision is that this is due to the internal integration algorithm of MathCAD13. Has anyone already seen this behaviour? Is it normal and can it be avoided?
thanks,
Ruben
P.S. Unfortunately, due to IP issues I am unable to post the worksheet.