Now let's explore a few more properties. Let's say I want to take the derivative with respect to x of, well, let's use the same a. Let's say I have some constant times some function. Well, derivatives work out quite well. You can actually take this little scalar multiplier, this little constant, and take it out of the derivative. This is going to be equal to a. It's going to be equal to a. I didn't want to do that magenta color.