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                                      Michael Lee's Mathematics and Physics

Derivatives of Functions

There is extreme satisfaction and virtue of hand-written documents as opposed to those made using tools and computers to make mathematical drawings.  I like using a bit of both.  Allowing the software, for example, to draw very nice circles, which I cannot do by hand unless I go hopelessly mad first, and then annotating the document by hand because it's just easier that way.

 

Here is a long lost drawing I made years ago describing the derivatives of functions.  I understand my penmanship quality writing script is the key to my personality.  I say that's a pile of mumbo jumbo but okay, here it is anyway.

 

  

 

For Example,