# Chapter 1

- Exercise 1.4: Until this point, demonstrated functions have a single argument and a single return value. The reader won't see until the start of Chapter 4 (pg 36) that type definitions have a `->` between all types, rather than the arrow separating the arguments from the return values.

# Chapter 3

- page 23 (missing text in square brackets): "Here b is an expression of type Bool called the condition[, c] is called the consequent[, and a] is called the alternative."

# Chapter 4

- Exercise 4.1 only comes out correctly if f(x) is written with `1/2` and not as 0.5 because the latter introduces floating point approximation/truncation issues regardless of what dt is provided to `derivative`.