Question License

Question ID 1842 (Universal ID 1356680990295475)

This question was written by dahn,Ingo, derived from work by Staab,Nikolai, mb Auer,Alexander, mb dahn,Ingo. This work is licensed under the IMathAS Community License (GPL + CC-BY).
The code that generated this question can be obtained by instructors by emailing dahn@vcrp.de.