[This problem has been resolved, sorry for posting in the wrong forum!]
(I was trying to model the trajectory of a particle in an electric field.)
closed as off topic by Qmechanic♦, Manishearth♦, David Z♦ Mar 29 '12 at 19:29
Questions on Physics Stack Exchange are expected to relate to physics within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here. If this question can be reworded to fit the rules in the help center, please edit the question.