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Descartes' 1637 Multiplication Part 2
作者：
Jonathan J. Crabtree
主題：
乘法
Re-Directing Descartes' 1637 Definition of Multiplication Part 2 Part 1 at
https://tube.geogebra.org/m/epzHhJNR
Youtube Video at
https://www.youtube.com/watch?v=-NEYhIITHP4
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