Comments and discussion on Valentin's 4th "Then and Now" - Area

[Albert Chan]

(01-12-2023 03:06 PM)Albert Chan Wrote:  If integrand behave like a polynomial, IBOUND likely over-estimates true error.
IBOUND was based from relative error of current result vs previous, not true result vs current.

For polynomial-like integrand, we can get by with bigger eps (= less function evaluations)

If integrand is *not* polynomial-like, even with u-transform, anything goes.

Plug to my old thread, HP71B IBOUND fooled