an excruciatingly deep dive into the power sum.

the natural log of imaginary numbers?

I really like this integral

the most outlandish technique is used to solve this...

BASIC Calculus – Understand Why Calculus is so POWERFUL!

1st Order Transfer Functions in Series: Amplitude Ratios, Phase Lags, Damping Factor and Time Delay

The Oldest Unsolved Problem in Math

a nice non-linear recursion problem

the geometry of the third derivative

Finding the closed form for a double factorial sum

Solving a 'Harvard' University entrance exam

Can you solve this integral?

The Discovery That Transformed Pi

The Basel Problem Part 1: Euler-Maclaurin Approximation

How to Take the Factorial of Any Number

The Man Who Solved the $1 Million Math Problem...Then Disappeared

This integral looks crazy

One of the first transcendental numbers -- Liouville's Constant

Faulhaber's Fabulous Formula (and Bernoulli Numbers) - Numberphile

Class Meeting 25 - MAT108

Harvard University Admission Interview Tricks