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1,651–1,680 / 13,083 条 · 第 56 / 437 页
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ELI5: Pi. Or π. I know that it's the ratio of a circle's circumference and its diameter, but why is it such an important number?
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ELI5: How was Pi discovered? I mean like how did we just find out what the first billion or so digits of this irrational number were?
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A question about computing pi using the Taylor series expansion for arctan(x)
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Circles are irrational. Because circles are impossible without π.
1 条相关评论
- 定义与几何 · 2020-12-23 · 2 分
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How are numbers such as Pi and e actually calculated?
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ELI5 How do we know there isn't a final number for pi, but that it goes on forever?
14 条相关评论
- 证明与性质 · 2021-01-25 · 12 分
- 证明与性质 · 2021-01-25 · 10 分
- 证明与性质 · 2021-01-25 · 2 分
- 证明与性质 · 2021-01-25 · 1 分
- 证明与性质 · 2021-01-25 · 1 分
- 计算与算法 · 2021-01-25 · -5 分
- 证明与性质 · 2021-01-25 · 1 分
- 证明与性质 · 2021-01-25 · 6 分
- 定义与几何 · 2021-01-25 · 2 分
- 计算与算法 · 2021-01-25 · 2 分
- 证明与性质 · 2021-01-25 · 1 分
- 定义与几何 · 2021-01-25 · 1 分
- 证明与性质 · 2021-01-25 · 1 分
- 证明与性质 · 2021-01-25 · 1 分
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ELI5: What does it mean to estimate pi
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Approximations of Pi (and other numbers) as Fractions
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Khan Academy now accepts tau in addition to pi in exercises
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ELI5: How do irrational numbers like pi exist?
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3.14159265359
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Pi is an infinite number used to determine the properties of a circle which is an infinite line.
1 条相关评论
- 证明与性质 · 2021-02-17 · 2 分
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is pi different for a circle in a curved surface?
1 条相关评论
- 定义与几何 · 2018-05-22 · 31 分
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TIL that π (pi) is a non repeating transcendental number, and may contain the answers to the universe.
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ELI5: How is it possible to know the exact point in a coordinate plane of an irrational number such as pi?
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Exact value of cos( pi^2 )
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No cheating! How far can you go? 3.1415926535897931
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TIL Daniel Tammet, an autistic savant, broke the record reciting pi to 22,514 digits and drew a representation of how he 'saw' pi in his head.
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- 历史与文化 · 2012-10-16 · 2 分
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I found a weird formula for pi. Can someone please help me understand better what's going on?
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[Mathematics] When you type the symbol for Pi into an equation on your calculator, how many decimal places does it take into account when finding an answer?
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Since pi is an infinite number, calculations will never be able to find the true area or circumference of a circle. Just an estimate.
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TIL: "39 or 40" decimals of pi are enough to calculate the circumference of the observable universe within the size of the simplest known atom.
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ELI5: Can the diameter of a supermassive black hole exceed its circumference divided by pi?
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ELI5: Why or why not can you use Tau instead of Pi in the formula for the area of a circle, and just not square the radius?
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A new record number was calculated with 62.8 trillion. digits of the famous number "Π" - FrontNet Blog
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Pi is an infinite number because a circle is a never ending line
1 条相关评论
- 证明与性质 · 2019-02-20 · 1 分
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TIL Your hat size is determined by measuring the circumference of your head and then dividing it by pi.
1 条相关评论
- 定义与几何 · 2017-02-22 · 6 分
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There is an irrational number which when multipied by π gives you 0
1 条相关评论
- 证明与性质 · 2022-06-27 · 0 分
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ELI5: How do calculators have irrational numbers like pi and e?
2 条相关评论