Question

Proving $\pi = 48\tan^{-1}\frac{1}{18} + 32 \tan^{-1}\frac{1}{57} - 20\tan^{-1}\frac{1}{239}$

score 820 · Answer 1 · 2026-04-17 01:25:31

820

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Proving $\pi = 48\tan^{-1}\frac{1}{18} + 32 \tan^{-1}\frac{1}{57} - 20\tan^{-1}\frac{1}{239}$

Published on 17 Apr 2026 - 1:25

score 198 · Answer 2 · 2026-04-09 09:39:53

198

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How Gelfond find his limit for $\exp(\pi) $?

Published on 09 Apr 2026 - 9:39

score 116 · Answer 3 · 2026-04-15 05:03:10

116

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Representation of $\pi$ using algebra and exp/log.

Published on 15 Apr 2026 - 5:03

score 534 · Answer 4 · 2026-04-30 08:24:41

534

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General P-series rule

Published on 30 Apr 2026 - 8:24

score 88 · Answer 5 · 2026-05-10 16:14:39

88

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Is this :$\int_{-1}^{1}\exp (-\tanh^{-1} (x))dx=\pi$ a well known integral representation for $\pi $?

Published on 10 May 2026 - 16:14

score 792 · Answer 6 · 2026-05-10 14:57:10

792

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Can you obtain $\pi$ using elements of $\mathbb{N}$, and finite number of basic arithmetic operations + exponentiation?

Published on 10 May 2026 - 14:57

score 1.3k · Answer 7 · 2026-05-10 15:08:37

1.3k

Views

Approximating pi rate of convergence

Published on 10 May 2026 - 15:08

score 172 · Answer 8 · 2026-04-13 08:16:33

172

Views

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score 529 · Answer 9 · 2026-05-05 02:47:19

529

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Showing $\pi$ is irrational using taylor's theorem

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score 101 · Answer 10 · 2026-04-14 14:46:25

101

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Is there any way to finitely represent all the information in pi?

Published on 14 Apr 2026 - 14:46

score 310 · Answer 11 · 2026-04-17 07:14:00

310

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How to find intersection of two and three sine waves on x axis intercept? (Biorhythms)

Published on 17 Apr 2026 - 7:14

score 118 · Answer 12 · 2026-05-10 16:35:57

118

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What is the exact value of this : $5\int_{0}^{\infty}\exp(-x^2 \text{erf}(x))x^{\sin x+\frac12}dx$?

Published on 10 May 2026 - 16:35

score 198 · Answer 13 · 2026-04-12 22:35:00

198

Views

Cardinality of number of digits

Published on 12 Apr 2026 - 22:35

score 131 · Answer 14 · 2026-04-30 00:17:24

131

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How to find the $\pi$?

Published on 30 Apr 2026 - 0:17

score 3.1k · Answer 15 · 2026-04-29 12:18:12

3.1k

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Is there a sufficiently reachable plausibility argument that $\pi$ is irrational?

Published on 29 Apr 2026 - 12:18

List Question

Proving $\pi = 48\tan^{-1}\frac{1}{18} + 32 \tan^{-1}\frac{1}{57} - 20\tan^{-1}\frac{1}{239}$

How Gelfond find his limit for $\exp(\pi) $?

Representation of $\pi$ using algebra and exp/log.

General P-series rule

Is this :$\int_{-1}^{1}\exp (-\tanh^{-1} (x))dx=\pi$ a well known integral representation for $\pi $?

Can you obtain $\pi$ using elements of $\mathbb{N}$, and finite number of basic arithmetic operations + exponentiation?

Approximating pi rate of convergence

Proving a formula for $\pi$

Showing $\pi$ is irrational using taylor's theorem

Is there any way to finitely represent all the information in pi?

How to find intersection of two and three sine waves on x axis intercept? (Biorhythms)

What is the exact value of this : $5\int_{0}^{\infty}\exp(-x^2 \text{erf}(x))x^{\sin x+\frac12}dx$?

Cardinality of number of digits

How to find the $\pi$?

Is there a sufficiently reachable plausibility argument that $\pi$ is irrational?

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