There are a few good resources. Here is a good blog post with some introduction: https://towardsdatascience.com/forward-mode-automatic-differentiation-dual-num

There are a few good resources. Here is a good blog post with some introduction: https://towardsdatascience.com/forward-mode-automatic-differentiation-dual-numbers-8f47351064bf https://towardsdatascience.com/forward-mode-automatic-differ... Some thorough notes from MIT: https://book.sciml.ai/notes/08-Forward-Mode_Automatic_Differentiation_(AD)_via_High_Dimensional_Algebras/ https://book.sciml.ai/notes/08-Forward-Mode_Automatic_Differ... Here is a teacher who taught a class using these, calling the dual element dx instead of h: https://cornellmath.wordpress.com/2007/08/28/non-nonstandard-calculus-i/ https://cornellmath.wordpress.com/2007/08/28/non-nonstandard...