This document is in two parts:
Part: 1 => integral accuracy 10000 as it illustrates Romberg's effectiveness
Part: 2 => integral accuracy 100 , otherwise Σcumul takes eternity.
The "test function", despite its linear look is in fact difficult
to integrate accurately. Smath native integrator can't.

Integrate Romberg_Legendre64 Test.sm (61 KiB) downloaded 78 time(s).