
I
saac Newton developed calculus back in the
mid-1600s as a tool to explain physical
phenomena, in particular the motions of planets.
As it turned out, it was also a way to encode how
things move and change more generally, from
economies to populations of rabbits and foxes.
When Newton did it, his reasoning was mostly
geometrical, not so much based on the large
amounts of algebra and symbols we associate
with calculus today. Those were mostly the
brainchild of his contemporary (and competitor)
Gottfried Wilhelm von Leibniz.
There is a lot of scary-sounding terminology
that puts people off calculus, like derivatives and
integrals. Too often, ...