Question

Approximation of $\pi$ step by step by using $\sin\frac{60}{2^x}(3(2^x))=\pi$

score 42 · Answer 1 · 2026-03-27 23:19:59

42

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Approximation of $\pi$ step by step by using $\sin\frac{60}{2^x}(3(2^x))=\pi$

Published on 27 Mar 2026 - 23:19

score 101 · Answer 2 · 2024-03-30 18:40:30

101

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How do I know if I am using infinitely many "steps" in a proof?

Published on 30 Mar 2024 - 18:40

score 2k · Answer 3 · 2015-01-04 19:17:16

2k

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What is the one point compactification of the reals?

Published on 04 Jan 2015 - 19:17

score 817 · Answer 4 · 2015-01-06 14:39:04

Is it true that the slope of a vertical line times the slope of a horizontal like don't equal $-1$, even though they're perpendicular?

score 106 · Answer 5 · 2026-03-26 16:05:03

106

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Ice cream issue in Lem's 'Extraordinary Hotel'

Published on 26 Mar 2026 - 16:05

score 5.6k · Answer 6 · 2015-01-07 22:28:20

5.6k

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'Smaller than infinity' notation

Published on 07 Jan 2015 - 22:28

score 412 · Answer 7 · 2026-03-28 03:53:03

412

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Number of iterations to reach cosine's fixed point

Published on 28 Mar 2026 - 3:53

score 180 · Answer 8 · 2015-01-09 22:52:00

180

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If $0{.}9\ldots$ is $1$, what does that make $0{.}3\ldots$?

Published on 09 Jan 2015 - 22:52

score 191 · Answer 9 · 2015-01-10 17:32:55

191

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Logarithmic Series

Published on 10 Jan 2015 - 17:32

score 1.1k · Answer 10 · 2015-01-11 11:29:46

1.1k

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Calculating $ \lim_{n\to \infty} (1+\sin({1}/{n}))^{n}$ without L'Hopital or series expansions

Published on 11 Jan 2015 - 11:29

score 2.5k · Answer 11 · 2015-01-11 22:05:13

2.5k

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Is the number of finite strings infinite?

Published on 11 Jan 2015 - 22:05

score 698 · Answer 12 · 2026-03-29 11:00:47

698

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Number of equivalence classes of binary sequences which differ only by finitely many elements.

Published on 29 Mar 2026 - 11:00

score 91 · Answer 13 · 2015-01-13 21:18:41

91

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Are these "infinity" sequences true?

Published on 13 Jan 2015 - 21:18

score 302 · Answer 14 · 2015-01-14 15:02:06

302

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Sum of alternate terms of Riemann Zeta function

Published on 14 Jan 2015 - 15:02

score 136 · Answer 15 · 2015-01-17 18:14:17

136

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why is $\lim_{x\to -\infty} \frac{3x+7}{\sqrt{x^2}}$=-3?

Published on 17 Jan 2015 - 18:14

List Question

Approximation of $\pi$ step by step by using $\sin\frac{60}{2^x}(3(2^x))=\pi$

How do I know if I am using infinitely many "steps" in a proof?

What is the one point compactification of the reals?

Is it true that the slope of a vertical line times the slope of a horizontal like don't equal $-1$, even though they're perpendicular?

Ice cream issue in Lem's 'Extraordinary Hotel'

'Smaller than infinity' notation

Number of iterations to reach cosine's fixed point

If $0{.}9\ldots$ is $1$, what does that make $0{.}3\ldots$?

Logarithmic Series

Calculating $ \lim_{n\to \infty} (1+\sin({1}/{n}))^{n}$ without L'Hopital or series expansions

Is the number of finite strings infinite?

Number of equivalence classes of binary sequences which differ only by finitely many elements.

Are these "infinity" sequences true?

Sum of alternate terms of Riemann Zeta function

why is $\lim_{x\to -\infty} \frac{3x+7}{\sqrt{x^2}}$=-3?

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