## Pythagoras Theorem

What is the Pythagoras theorem? It is $a^2 + b^2 = c^2$. Here, $a$, […]

## Discovery of the Logarithm by John Napier

Here is a short series of videos I made about the discovery of the Logarithm. John […]

## Writing Unit Vectors for a Cartesian Coordinate System in Terms of Unit Vectors for a Spherical Coordinate System

Objective of this Post The objective of this post is to form (4) in this […]

Algebra

## Absolute Value Property

In this post, I prove that $|xy| = |x||y|$ in which $x$ is a […]