I was recently assigned a research mentor in my Master's program who also happens to be my professor (in a quantitative economics course). We've had a brief meeting to introduce ourselves, and I made it clear that I'm very interested in his research subject; needless to say, I want to impress this professor.
I just took the exam for his course which accounts for roughly my entire grade, and I did terribly. I studied a ton, but apparently focused on the wrong topics. At this point, I am wondering if I should somehow reach out to the professor basically telling him my thoughts of the exam, or if I should simply wait to hear from him, and if I don't hear from him, simply not say anything. He'll be my research mentor for the next year on this subject, so it almost feels like there is now an elephant in the room. Would you recommend reaching out to the professor preemptively?