Sunday, November 25, 2018

12岁郭承光用中文开讲《常微分方程》(137)

#math # Ordinary Differential Equations #常微分方程

ORDINARY DIFFERENTIAL EQUATIONS PRESENTED BY GUO CHENG GUANG(aged 12) (137)

https://www.youtube.com/watch?v=Y6yQtGQYA9U



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