2024-11-16
julyfun
notes
数分
数学基础
$$H_(i, j) = (diff^2 f) / (diff x_i diff x_j)$
2024-09-27
参见:https://zh.wikipedia.org/zh-cn/%E6%B3%B0%E5%8B%92%E5%85%AC%E5%BC%8
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