Math 13 Homework #5 When I was young I observed that nine out of every ten things I did were failures, so I did ten times more work. George Bernard Shaw

	Reading Read what we will cover in the next class: 12.4. When reading 12.4 pay special attention to the following concepts: tangent plane; equation of tangent plane; differential; total differential; differentials and approximations

	Problems The following problems are due by the beginning of class on Friday 10/9. Turn these problems into me, not the homework box. 12.3: 49, 50. As last time, the explanation/justification of your answer is most important. The following problems are due by the beginning of class on Friday 10/9. 12.3: 1, 7, 18, 29, 31, 35, 42, 59, 64, 66, 78a, 87.