👉 Pattens are mathematical objects that represent relationships between variables. In other words, they are used to define a function or relation between two variables.
For example, if we have a function f(x) = 2x + 3, and we want to know what values of x give us the output value of f(5), we can use a pattens to represent this relationship. The pattens would look like this:
f(5) = 2
5 + 3