<?xml version="1.0" encoding="UTF-8"?>
<quiz>
  <question type="stack">
    <name>
      <text>Logs_1</text>
    </name>
    <questiontext format="html">
      <text><![CDATA[<p>Given that \(\ln(a)={@a@}\) , express: \[\log_{a}(x^{@n@})\] as a single multiple of a natural logarithm.</p>
<p>\(\log_{a}(x^{@ n @}) = \) [[input:ans1]] [[validation:ans1]]</p>]]></text>
    </questiontext>
    <generalfeedback format="html">
      <text><![CDATA[<p>Below are the basic rules of logarithms.<br />\[\log_{b}(mn) = \log_{b}(m) +\log_{b}(n)\]<br />\[\log_{b}\left(\frac{m}{n}\right) = \log_{b}(m) -\log_{b}(n)\]<br />\[\log_{b}(m^n) = n\cdot\log_{b}(m)\]</p>
<p>\[\log_{a}(m)=\frac{\log_{b}(m)}{\log_{b}(a)}\]</p>
<p><br />Hence \[\log_{a}(x^{@n@}) = {@n@}\log_{a}(x) = {@n@}\frac{\ln(x)}{\ln(a)}\]</p>
<p>\[ = {@n@}\frac{\ln(x)}{@a@}={@correctanswer@}\]</p>]]></text>
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    <questionvariables>
      <text>a:rand(8)+2;
 n:rand(8)+2;
 correctanswer:ev(n*ln(x)/a);
 wronganswer1:ev(n*a/ln(x));
 wronganswer2:n*a*ln(x);</text>
    </questionvariables>
    <specificfeedback format="html">
      <text><![CDATA[<p>[[feedback:Result]]</p>]]></text>
    </specificfeedback>
    <questionnote format="moodle_auto_format">
      <text>When \(\displaystyle \ln(a)={@a@}, \log_{a}(x^{@n@}) ={@correctanswer@}\)</text>
    </questionnote>
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     {"author":[{"firstName":"","lastName":"","institution":"Unknown - Legacy question","year":"2025"}],"language":["en"],"isPartOf":"STACK Library","license":"cc-sa-4.0","additional":{"UoE":{"Notes":"This is automatically generated metadata."}},"freeform":{}}
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      <type>algebraic</type>
      <tans>correctanswer</tans>
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          <text><![CDATA[<p>Check the Log Laws</p>]]></text>
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        <name>2</name>
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        <answertest>AlgEquiv</answertest>
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        <tans>wronganswer2</tans>
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          <text><![CDATA[<p>Check the Log Laws</p>]]></text>
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    </qtest>
  </question>
</quiz>
