![DrFrostMaths on Twitter: "Happy Pi Day! Pi Fun Fact: Below is the 'series expansion' (i.e. polynomial version) of inverse tan. Noting that inverse tan of 1 is 45 degrees = pi/4 radians, DrFrostMaths on Twitter: "Happy Pi Day! Pi Fun Fact: Below is the 'series expansion' (i.e. polynomial version) of inverse tan. Noting that inverse tan of 1 is 45 degrees = pi/4 radians,](https://pbs.twimg.com/media/ETDRjBKWoAAvUmi.png)
DrFrostMaths on Twitter: "Happy Pi Day! Pi Fun Fact: Below is the 'series expansion' (i.e. polynomial version) of inverse tan. Noting that inverse tan of 1 is 45 degrees = pi/4 radians,
![definite integrals - Proof of $\sum\limits_{k=1}^{\infty} \frac{1}{k^4} = \frac{\pi^4}{90}$ using the Fourier series of $|x|$ - Mathematics Stack Exchange definite integrals - Proof of $\sum\limits_{k=1}^{\infty} \frac{1}{k^4} = \frac{\pi^4}{90}$ using the Fourier series of $|x|$ - Mathematics Stack Exchange](https://i.stack.imgur.com/zRN2S.jpg)
definite integrals - Proof of $\sum\limits_{k=1}^{\infty} \frac{1}{k^4} = \frac{\pi^4}{90}$ using the Fourier series of $|x|$ - Mathematics Stack Exchange
![Calculating Pi by Leibniz's formula|Series Calculation|Coding in Python beginners|Coding Pi Part 2 - YouTube Calculating Pi by Leibniz's formula|Series Calculation|Coding in Python beginners|Coding Pi Part 2 - YouTube](https://i.ytimg.com/vi/DMInC4J5gd0/maxresdefault.jpg)
Calculating Pi by Leibniz's formula|Series Calculation|Coding in Python beginners|Coding Pi Part 2 - YouTube
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![SOLVED: 3. Estimate pi using the Maclaurin series for arctan(x): 44 The Maclaurin series expansion for the arctangent of x is de- fined for |x| = 1 as (-1)" 2n + SOLVED: 3. Estimate pi using the Maclaurin series for arctan(x): 44 The Maclaurin series expansion for the arctangent of x is de- fined for |x| = 1 as (-1)" 2n +](https://cdn.numerade.com/ask_images/cf37c75538d7440bae02c043366608a2.jpg)
SOLVED: 3. Estimate pi using the Maclaurin series for arctan(x): 44 The Maclaurin series expansion for the arctangent of x is de- fined for |x| = 1 as (-1)" 2n +
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![SOLVED: (1 point) Leonhard Euler was able to calculate the exact sum of the p-series with p = 4: 1 n1 [ 90 n=1 Use this fact to find the sum of SOLVED: (1 point) Leonhard Euler was able to calculate the exact sum of the p-series with p = 4: 1 n1 [ 90 n=1 Use this fact to find the sum of](https://cdn.numerade.com/ask_images/1d7a378fc77347f3b4cbbf1dea966a14.jpg)