👉 A smooth function is a function that looks like it's been smoothed out or made smoother. This means that the values of the function are more evenly distributed around its center, without any sharp corners or jumps in the data. For example, if we have a function f(x) = x^2, and we want to smooth it out by making it look like it's been divided into smaller segments instead of having all points be equally spaced, then we can use a smoother function that takes less data