learning-haskell/02-hello-haskell/2.5-comprehension-check.md

Exercises: Comprehension check

Exercise 1

To declare these functions in the REPL, you need to prepend them with let.

let half x = x / 2

let square x = x * x

Excercise 2

In the REPL:

let foo x = 3.14 * (x * x)

Excercise 3

In the REPL:

let bar x = pi * (x * x)