We have found that the GPT-5.6 Sol model that you have free access to through the UMass GenAI platform can still make mistakes relatively frequently when giving feedback on this assignment. Specifically, it sometimes makes changes to equations when quoting them from your submission (sometimes hallucinating mistakes that are not there). When it quotes part of your submission, please double check the quote, and check suggested corrections against the official solutions. In some cases, the feedback may also be unnecessarily long. So, we encourage you to use the response to the prompt as additional feedback, but to primarily rely on going through the provided solutions.