What is life but a sea of change?
Mathematically, when we speak of change, we are speaking about rates … one thing changing compared with another.
Rates are easy to calculate when the situation does not vary; when you travel at a constant speed, for example.
But, what happens when your rate of change is itelf changing? How do you handle that?
Welcome to the world of calculus and, in particular, derivatives … which are ways of calculating rates of change as a function (as something that changes).