#wordsandsomeformulas — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #wordsandsomeformulas, aggregated by home.social.
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New blog post: A short solution to the Monty Hall problem that I have not seen elsewhere (https://functor.network/user/414/entry/867).
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“There is an island of knights who always say the truth and of knaves who never do. There is a country of day-knights who speak truthfully only at daytime and of night-knights whose speech at the day is a lie. There is an island of Democrats and Republicans.” – I have a new blog entry about knights-and-knaves riddles and how to understand them with propositional logic (https://functor.network/user/414/entry/510).
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Why is the determinant of the matrix \( \begin{pmatrix} a_1 & b_1 \\ a_2 & b_2 \end{pmatrix} \) equal to \( a_1 b_2 - a_2 b_1 \)?
I have found a geometrical interpretation (https://functor.network/user/414/entry/299) and with it also started a blog.
#WordsAndSomeFormulas #Mathematics #MathEdu #Determinant #Geometry