Don't mistake, cumulative vector is not an integrator.
Observe:
1. In doubt of the integration operator [Smath Simpson]
Finite Differences [FD] is a yardstick of very high accuracy.
2. FD integration is insensible to noise.

Jean



Finite Differences [Fnct, Deriv, Cumul].sm (82 KiB) downloaded 89 time(s).