Auteur principal			Co-auteurs(s)
Nom :	Prof Stephan V. Joubert		Nom :	Prof Temple H. Fay
Courriel :	joubertsv@hotmail.com; joubertsv@tut.ac.za		Courriel :	thfay@hotmail.com
Institution ou compagnie:	Tshwane University of Technology		Nom :
Département:	Mathematical Technology		Courriel :
Ville :	Pretoria		Nom :
État/Province :	Gauteng		Courriel :
Pays :	South Africa		Nom :
Type de présentation:	Conférence :  25 minutes.		Courriel :
Conférence et numéro :	Derive & TI-CAS  ,    Numéro : D11		Horaire :   Local :	jeudi, 15h00   1350
Site Internet :
Titre de la communication :	Testing the Accuracy of DERIVE's "RK" Routine
Résumé de la communication :
A computer laboratory component has become part of many beginning courses on ordinary differential equations. Here students are asked to numerically solve initial value problems, but little attention is given to the accuracy of such numerical solutions. Indeed, many text books only pay lip service to this important part of numerical analyses, possibly because the authors believe that the topic is too advanced for beginners. In this article we offer a simple DERIVE procedure that provides a measure of the accuracy of the Runge-Kutta order 4 DERIVE routine "RK". The procedure has a nice spin off too: it often provides a superior numerical result from the algorithm.