For midterm#2, the practice midterms are copied from previous semesters, and ours might be somewhat different. In particular, please note the following: On practice midterm 1, question 5.4 doesn't make any sense. (If the sequence a_n is divergent, then it is meaningless to discuss its limit.) On practice midterm 3, question 1 must have a typo so I'm not sure what the actual question was supposed to be. (It's trivially true since (-1)^4=1.) Our midterm might have some kinds of questions which are not on the practice midterms at all, including but not limited to: * Find the sum of a given series. * Approximate the sum of a given series to a given accuracy. For more balanced coverage of different kinds of problems that might appear I highly recommend the problems in Chapter 11 of the book (both the review problems and the regular problems).