BBC documentary about the independent discoveries of calculus by Sir Isaac Newton and Gottfried Leibniz. We get a look at the original texts from Newton and Leibniz where we can see, in their own handwriting, how their thoughts evolved. A fascinating look at the writings of these great men and how they helped unify differential and integral calculus, from very different perspectives.

In a discussion about Leibniz, we see how the Greek method of exhaustion for determining area under a curve was formalized mathematically via the concept of “omnia l”, leading to the first use of what we now know to be the integral symbol, as well as the notation for a differential: dx.