Chapter 49: Lagrange inversion

49.1 Newton

https://www.bilibili.com/video/BV1ge411e7K7

49.2 Lagrange

Lagrange inversion theorem

Lagrange–Bürmann formula

拉格朗日反演

https://www.bilibili.com/video/BV13V411L7XL

https://www.bilibili.com/video/BV1AM41167y2