Posts Tagged ‘math’

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is a rotation 180 degrees about the origin also a reflection – Google Search

December 9, 2025

https://www.google.com/search?q=is+a+rotation+180+degrees+about+the+origin+also+a+reflection&oq=is+a+rotation+180+degrees+about+the+origin+also+a+reflection&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIGCAEQRRg8MgYIAhBFGDwyBggDEEUYPNIBBzY2NWowajeoAgCwAgA&sourceid=chrome&ie=UTF-8

Yes, a 180-degree rotation about the origin is equivalent to a point reflection (or inversion) through the origin

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Desmos | Graphing Calculator

February 26, 2024

https://www.desmos.com/calculator

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Euler’s totient function (video) | Khan Academy

January 28, 2024

https://www.khanacademy.org/computing/computer-science/cryptography/modern-crypt/v/euler-s-totient-function-phi-function
Also, Euler phi function

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Euler’s Totient Function and Euler’s Theorem

January 28, 2024

https://www.doc.ic.ac.uk/~mrh/330tutor/ch05s02.html

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What is 25 mod 2? (25 modulo 2?)

January 13, 2024

https://divisible.info/Modulo/What-is-25-mod-2.html

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The Caesar cipher (video) | Cryptography | Khan Academy

January 13, 2024

https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/caesar-cipher#:~:text=The%20Caesar%20Cipher%2C%20used%20by,exploits%20patterns%20in%20letter%20frequencies.

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Fermat’s little theorem (video) | Khan Academy

January 13, 2024

https://www.khanacademy.org/computing/computer-science/cryptography/random-algorithms-probability/v/fermat-s-little-theorem-visualization
a^p = a mod p

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logical deduction – What is number of car parking spot ? – Puzzling Stack Exchange

July 4, 2023

https://puzzling.stackexchange.com/questions/51280/what-is-number-of-car-parking-spot

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Tansu YEĞEN on Twitter: “Multiplication from scratch😊 https://t.co/Ivb0mp0Wcg” / Twitter

October 15, 2022

https://twitter.com/TansuYegen/status/1581362833220308992

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Professor suspected of being a terrorist because of a math equation

May 11, 2016

Prof suspected of being a terrorist because of a #math equation http://usat.ly/273zpEI What if he’d drawn chemical models instead HT @Layth

http://www.usatoday.com/story/news/2016/05/07/professors-airplane-math-leads-flight-delay/84084914/

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