ISE = International Student Exchange?
Since there are several professors giving math lectures at FH Bielefeld, you should specify. You could check Jörn Loviscach's homepage (math for renewable energies) where you can find a lot of old exams (and answers). Note that the exams are german only: www.j3l7h.de
If this isn´t want you´re looking for I suggest you ask your collgeagues (?)