Wait, Change is Better Than Quantity?

An Introduction to Differential Equations

Photo by Suzanne D. Williams on Unsplash

When we think about the math that we have learned throughout school, the overwhelming majority deals with absolute quantities. For example, if given the linear function f(x) = x + 2, for whatever input x, we obtain an output that is a fixed number quantity: if x = 2, f(x) = 4, and if x = 5.5, f(x) = 7.5. For the longest time, I…