Derivatives and Integrals An Annotated Discourse

    <section label="section-introduction">
      <title>Introduction</title>
<!--
URLs can be done in a traditional fashion, as in the
abstract below. Or you can make an empty element and the URL in
the href attribute will be the content you click on.  See the
example near the discussion of Asymptote.
-->
      <p>
        We consider definite integrals of functions <m>f(x)</m>.
        For example,
        <me>
          \definiteintegral{0}{2}{\sin^2(x)}{x}
        </me>.
        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>