Hi
I am integrating some complex equations using vpaintegral in matlab. it is triple integration and the equations are too complex, so the calculation time is too high
when the reltol and abstol is set to 1e-1, it takes about 3-4 hours to compute the result, but I need more accuracy.
when I set reltol and abstol to 1e-2 it takes about 12 hours!! and yet I need more accuracy!!
The questions is that is it necessary to give both reltol and abstol values to get accurate result?? or one of them are enough in my work? and does it make any difference in calculation time to set only one of them (or it doesn't affect)? if so, which one should I use?
(the value of my final result is between 990 to 1001)
thank you
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