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    <name>
      <text>19.1.3.4</text>
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      <text><![CDATA[<p class="HELM_exercise">Exercise</p>
<p dir="ltr" style="text-align: left;">Classify the differential equation \[\dfrac{d^3y}{dx^3}=\left(\dfrac{dy}{dx}\right)^2+\dfrac{dy}{dx}.\]</p>]]></text>
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    <generalfeedback format="html">
      <text><![CDATA[<p dir="ltr" style="text-align: left;">The highest derivative is of order three, and the squared term is non-linear.</p>]]></text>
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      <text>Your answer is correct.</text>
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      <text>Your answer is partially correct.</text>
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      <text>Your answer is incorrect.</text>
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    <answer fraction="100" format="html">
      <text><![CDATA[<p dir="ltr" style="text-align: left;">Third order, non-linear</p>]]></text>
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    <answer fraction="0" format="html">
      <text><![CDATA[<p dir="ltr" style="text-align: left;">Second order, non-linear</p>]]></text>
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      <text><![CDATA[<p dir="ltr" style="text-align: left;">Third order, linear</p>]]></text>
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    <answer fraction="0" format="html">
      <text><![CDATA[<p dir="ltr" style="text-align: left;">First order, non-linear</p>]]></text>
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