Definition of a Limit

First, here is a video I made about a limit: Understanding what a Limit is. Next, I copy a definition of a limit from [1]. A function $ f(x)$ approaches a limit $ A$…

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The Tangent Line & the Tangent Function

The following equalities provide context to the definition of the tangent function. Now, what if $y$ is a function symbolized by $y(x)$ such that $y(x)=x$? In this case, $x$ is the independent variable…

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Spherical Coordinates

The following drawing shows how to convert from Cartesian coordinates to spherical coordinates. This is a short post, but these three equations are pretty useful. I am going to use the end of…

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The Electric Field

In this post, an expression for the electric field is derived.

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