Question License

Question ID 2021 (Universal ID 1359547387261525)

This question was written by Schraag,Andreas, derived from work by WebWork-Rochester, mb Lippman,David, mb Schraag,Andreas. 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.