Plastic Number Derivation

3,508 views · Published 31 December 2018 · 11:42 · Indexed 1 November 2026

Channel: Dr Peyam · 2018 · Education

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In this video, I derive the plastic number, which is a neat generalization of the golden ratio. It's given by a solution of a cubic equation, so I also show how to solve cubic equations, at least in a very special case. Enjoy!

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