<story><title>A Little Calculus</title><url>https://papl.cs.brown.edu/2018/func-as-data.html#%28part._.A_.Little_.Calculus%29</url></story><parent_chain></parent_chain><comment><author>dcre</author><text>This links to the 2018 edition of this book. Each edition points to a newer one until the book splits into two books. This section doesn’t seem to have changed much throughout the editions, but I figured people might like to see the most recent version of the content overall.&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;papl.cs.brown.edu&amp;#x2F;2018&amp;#x2F;index.html&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;papl.cs.brown.edu&amp;#x2F;2018&amp;#x2F;index.html&lt;/a&gt;&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;papl.cs.brown.edu&amp;#x2F;2019&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;papl.cs.brown.edu&amp;#x2F;2019&amp;#x2F;&lt;/a&gt;&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;papl.cs.brown.edu&amp;#x2F;2020&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;papl.cs.brown.edu&amp;#x2F;2020&amp;#x2F;&lt;/a&gt;&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;papl.cs.brown.edu&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;papl.cs.brown.edu&amp;#x2F;&lt;/a&gt;&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;dcic-world.org&amp;#x2F;2023-02-21&amp;#x2F;func-as-data.html#%28part._fd-calculus%29&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;dcic-world.org&amp;#x2F;2023-02-21&amp;#x2F;func-as-data.html#%28part....&lt;/a&gt;</text></comment>
<story><title>A Little Calculus</title><url>https://papl.cs.brown.edu/2018/func-as-data.html#%28part._.A_.Little_.Calculus%29</url></story><parent_chain></parent_chain><comment><author>haskellandchill</author><text>Someone made a great comment about the matrix approach to teaching the derivative and deleted it, maybe because it wasn&amp;#x27;t rigorous. Seems like &amp;quot;Differentiation Matrices&amp;quot; is the technical term: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;tobydriscoll.net&amp;#x2F;fnc-julia&amp;#x2F;bvp&amp;#x2F;diffmats.html&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;tobydriscoll.net&amp;#x2F;fnc-julia&amp;#x2F;bvp&amp;#x2F;diffmats.html&lt;/a&gt;</text></comment>