dang i am in precal class, wanting to get a jump start on calculus, and none of this or lecture one made any sense, he kept talking about limits and derivitaves and even showed examples, but never explained how to get them that well, or even what they were....have the ppl in this class had previous exposure to this stuff?####[['lecture', 'Course_General_Feedback', 'NEG'], ['NULL', 'Instructor', 'NEG'], ['calculus', 'Mathematical_Related_Concept', 'NEU'], ['limits', 'Mathematical_Related_Concept', 'NEU'], ['derivitaves', 'Mathematical_Related_Concept', 'NEU'], ['ppl', 'Other', 'NEU']]