It's the weekend! I'm working on grading (obviously) and new Homework. Here is another 1977 Grateful Dead performance, from this date in fact! It's...well, it's notable, since a new song was played (there were several of those in the first installment of this series - a better show than this, imho). Hey, who cares. Music + math for a happy Saturday to you! :)
So yes, I am moving slower than anticipated on the Practice Exams. Just posted three - for 55, 94 and 121. The rest to come during the afternoon. Solutions tomorrow (planned). Sorry for the unavoidable-ish delay.