The Beauty of Calculus [video]
Very nice lecture that connects calculus to the laws of nature. I've always thought applied math has a leg up on abstract math because of the connections to real-world ideas.I encourage anyone who liked the talk to try out some of the calculations on their own using https://live.sympy.org/ which is an online REPL with build in calculus function like integrate, diff, limit, summation, etc.  Here is an example:   >>> summation((1/2)**(2*n), [n,0,oo])
   4/3

via https://live.sympy.org/?evaluate=summation((1%2F2)**(2*n)%2C...   note the answer is an exact rational number (class 'sympy.core.numbers.Rational) and not a float approximation 1.33333...For a quick tutorial on how to use SymPy, check "Taming math and physics using SymPy" which is avail in printable format https://minireference.com/static/tutorials/sympy_tutorial.pd... or notebook https://nbviewer.jupyter.org/github/minireference/sympytut_n...