MATH 151 - FALL 2015 - ASSIGNMENT #21 In Chapter 11 of the Textbook, read sections 11.1-11.2 and do the following exercises: 11.1,11.3,11.4, 11.5. These problems will not be collected for grading, but may be used as the basis for in-class problems you will be expected to turn in during class. Due: Wednesday November 6, 2015.