This I Know I Think
Life on the verge of understanding
October 16, 2018 Categories: Uncategorized. Tags: maths.

Here’s another example of a mathematical identity that is almost magical:

$$\frac {\pi} {4} = 1 – \frac{1}{3} + \frac{1}{5} – \frac{1}{7} +…$$
The beauty lies in the apparent simplicity of this, along with the fundamental question of why the interminable expression on the right results in increasingly better approximations to $\pi$.

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