Due Friday, September 11, in class

Exercises 1.1.2, 1.2.4, 1.2.5, 1.2.8, 1.2.13, 1.3.4, 1.9.4, 1.9.8, 1.9.11, 1.9.12

I will select some problems from those to grade. Please ask me about any questions you have on the problems that are not graded.