So let's say that f of x is equal to x. The power rule tells us that f prime of x is going to be equal to what? Well, x is the same thing as x to the first power, so n is implicitly 1 right over here. So we bring the 1 out front, it'll be 1 times x to the 1 minus 1 power. So it's going to be 1 times x to the 0 power. x to the 0 is just 1, so it's just going to be equal to 1. Now does that make conceptual sense if we actually try to visualize these functions?