Re: Indicator of the "difference" between two curves

On Mar 30, 3:09 pm, Ray Koopman <koop...@xxxxxx> wrote:
... you might consider tabling f over an appropriate interval,
with small enough spacing so that, as far as the regressions
are concerned, you could treat table-lookup-plus-interpolation
as differing only negligibly from exact calculation.

If you do decide to go this route, and if getting f', f", etc, once
you have f, is less work than getting f itself, then saving the low-
order derivatives in the table along with the function value, and
using them in the interpolation, will let you increase the table
spacing without sacrificing accuracy of interpolation.
.

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