**Week 3** due 4/18.

Chapter 26 problems 2a, 8, 9, 10a.

Chapter 27
problems 1i-iii, 2i-iii, 5, 6 (the `Cauchy product' just means multplying power series as if
you were expanding out a product of brackets), 9i, 14.

Optional: chapter 26 problem 4,
chapter 27 problem 11, 16a,b, 17