Author Topic: incomplete elliptic integral  (Read 1796 times)

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jack

  • Guest
incomplete elliptic integral
« on: August 15, 2014, 10:14:12 AM »
there was a problem posted at the Mathematica forum where Mathematica gave the wrong result,
so I tried the problem in Maple and it gave the correct numeric result.
the result involves the elliptic integral of the first kind, if I enter the symbolic result from Maple in Mathematica
it gives a different numeric answer than Maple, my question: is Mathematica's EllipticF function wrong or is Maple's ?

.

RobbeK

  • Guest
Re: incomplete elliptic integral
« Reply #1 on: August 15, 2014, 11:46:46 AM »
Hi Jack,

Possibly  there may be a confusion between the arguments depending on the way the Elliptic integral is written --  iirc there is a trigoniometric representation and the one by Jacobi  (it's a substitution something as  t=sin(a) ;  x=sin(b) ) -- I'll look it up (it's late here (i'm in the EU )  -- and I have Maxima somewhere (the Algebraic Lisp system -- it surely has every type of those Elliptic integrals ) to compare ..

best Rob
« Last Edit: August 15, 2014, 11:55:26 AM by RobbeK »

jack

  • Guest
Re: incomplete elliptic integral
« Reply #2 on: August 15, 2014, 03:03:50 PM »
hello RobbeK,
I will be away from my computer for the next two days, wish you a peaceful weekend.