## Definition of a Derivative

I copy the definitions of three different types of derivatives from [1]: \$ \lim_{\Delta x […]

## Definition of a Limit

First, here is a video I made about a limit: Understanding what a Limit is. Next, […]

Trigonometry

## The Tangent Line & the Tangent Function

The following equalities provide context to the definition of the tangent function. Now, what if […]

Coordinate Systems

## Spherical Coordinates

The following drawing shows how to convert from Cartesian coordinates to spherical coordinates. This is […]