Derivatives and Integrals An Annotated Discourse

              <section label="section-introduction">

                <title>Introduction</title>

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                <p>
We consider definite integrals of functions <m>f(x)</m>.  For example, 
                  <md>
\definiteintegral{0}{2}{\sin^2(x)}{x}
                  </md>.

  This is also a demonstration of the capabilities of <url href="https://pretextbook.org" visual="pretextbook.org"><pretext/></url>.
                  <notation>

                    <usage><m>\int_a^b\,f(x)\,dx</m></usage>

                    <description>
definite integral of <m>f(x)</m>
                    </description>

                  </notation>

                </p>

                <p>
Generated: <today/>, <timeofday/>
                </p>

              </section>