mechvel wrote:
>
> Probably, the `step' needs to be given somewhere.
> Because this integral is approximated as a finite sum.
> I woder, what to call.
>
> On Tuesday, April 21, 2015 at 10:37:51 PM UTC+4, mechvel wrote:
> >
> > I am trying to use FriCAS 1.2.5
> > to find numerically
> >
> > Integral from a to b
> > (<certain rational function of x over Integer> * ln(abs(x))) dx,
> >
> > with a, b : Float, with computing everything as Float.
> >
> >
> > Is it of the package
> > ElementaryFunctionDefiniteIntegration(D4,D2)
ElementaryFunctionDefiniteIntegration is for symbolic
computation. You may try to evaluate integral symbolicaly
and then substitute values, but this may fail for various
reasons. For numerical computation there in NumericalQuadrature
package. The best available methods probably are 'romberg'
and 'aromberg'.
--
Waldek Hebisch
[email protected]
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