There are a lot of comments that some of the Prof.'s explanations are not rigorous enough. MIT has 2 or 3 levels of introductory calculus. This one is for freshmen with little or no high school calculus, and who will probably major in eng. where the key is to get the right answer rather than to be rigorously correct. If you go to the OCW website, you can find the one aimed at students who want to major in math or physics. It's totally different and much harder.####[['comments', 'Course_General_Feedback', 'NEG'], ["Prof.'s", 'Instructor', 'NEG']]