Question License

Question ID 3842 (Universal ID 1391670685122916)

This question was written by Gaa,Julia, derived from work by Staab,Nikolai, mb Auer,Alexander, mb dahn,Ingo; Staab,Nikolai. 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.