Accuracy of Integral with epsilon

[Paul Dale]

(10-09-2021 02:22 AM)Valentin Albillo Wrote:  Are you saying that a complex state-of-the-art Tanh-Sinh method requires 27 evaluations of the integrand (the constant 2) to integrate the constant 2 from -10 to 10 ? Really !?

It's neither complex nor state of the art.

How many function evaluations should be performed?

Clearly one evaluation is sufficient to get the correct answer here. Two might be prudent to verify that it is a constant function. Three perhaps?


Pauli