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As best you can from the reading, class discussion on Monday, and the posted "background notes", complete the Chapter 2, Set 2, exercises on pp. 73-76 #21-23,25,27,29,31, 34, 38, 40, 48, 57a,b,d,e, 59a,b, 64a,b,g, 66,69. We will pick up on any loose ends in class, so it's okay if you don't figure out every problem perfectly on your own. (You can ask in class.) Move on to the ones you DO know how to do.