Program to solve Differencial equations

[Code4Fun]

My physics teacher told me he needs a program to solve differential equations from moving electrons on a linux cluster.Can somebody give me some ideas.What program is good, even if its copyrighted it doesn't mather because the teacher will buy it , its for school.

Thanks in advance!

[redargon]

Octave, SciLab are free Matlab type programs that can be used to solev differential equations on a Linux machine.

Otherwise Matlab, but you need to purchase a license for that.