complex-numbers

一篇关于复数单位根的教学笔记，从实数开方出发，介绍用极坐标计算 n 次单位根、其在单位圆上的旋转几何意义，以及与正多边形和群论的联系，并配有可交互的可视化图示。

This article demonstrates implementing data-directed programming in Haskell for complex number operations, following the approach from SICP 2.4.3 to avoid modifying generic functions when adding new representations.