HP 15C and INT(1/√(1-x),0,1)

[Dieter]

(01-10-2018 08:57 PM)Valentin Albillo Wrote:  Also, the fact that CAS can give the exact value almost instantly is completely irrelevant, most integrals cannot be managed by CAS (...)

Why do you think this is completely irrelevant? If I want to solve an integral the first step is trying to solve it symbolically and get an exact result. Either "by hand" or with a CAS. If this is not possible – and you don't know unless you tried – a numeric approach (for a definite integral) is the second option that gives at least a more or less exact approximation.

Dieter