We are dealing with an equation with numbers to the power of x

To start with the proof, let’s expand the exponential function

We use the knowledge of basic calculus

We can start by adding some lengths to the triangle as shown in the next figures

We add some sections to the semicircle and the rectangle

This is how to get the value of x in this type of equation

First, let’s show that the series converges with basic mathematics

Let’s start by multiplying both sides by (x-1)(x-2)

Let’s define the polynomials, , then the elementary calculus