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    <title>MaplePrimes - answers and comments on Question, Differentiating a function and then evaluating it</title>
    <link>http://www.mapleprimes.com/questions/104227-Differentiating-A-Function-And-Then-Evaluating-It</link>
    <language>en-us</language>
    <copyright>2026 Maplesoft, A Division of Waterloo Maple Inc.</copyright>
    <generator>Maplesoft Document System</generator>
    <lastBuildDate>Wed, 10 Jun 2026 21:34:32 GMT</lastBuildDate>
    <pubDate>Wed, 10 Jun 2026 21:34:32 GMT</pubDate>
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    <itunes:summary />
    <description>The latest answers and comments added to the Question, Differentiating a function and then evaluating it</description>
    <image>
      <url>http://www.mapleprimes.com/images/mapleprimeswhite.jpg</url>
      <title>MaplePrimes - answers and comments on Question, Differentiating a function and then evaluating it</title>
      <link>http://www.mapleprimes.com/questions/104227-Differentiating-A-Function-And-Then-Evaluating-It</link>
    </image>
    <item>
      <title>exp(2*x) vs. e^(2*x)</title>
      <link>http://www.mapleprimes.com/questions/104227-Differentiating-A-Function-And-Then-Evaluating-It?ref=Feed:MaplePrimes:Differentiating a function and then evaluating it:Comments#answer104228</link>
      <itunes:summary>&lt;!--break--&gt;
&lt;p&gt;The exponential function, exp(x), calculates the value of e to the power of x, where e is the base of the natural logarithm, 2.718281828... .&lt;/p&gt;
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&lt;td&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt; &amp;gt;&amp;nbsp;&lt;/span&gt;&lt;/td&gt;
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&lt;p style="margin: 0pt; padding-top: 0px; padding-bottom: 0px;" align="left"&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt;restart:&lt;/span&gt;&lt;/p&gt;
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&lt;td&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt; &amp;gt;&amp;nbsp;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;
&lt;p style="margin: 0pt; padding-top: 0px; padding-bottom: 0px;" align="left"&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt;?exp&lt;/span&gt;&lt;/p&gt;
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&lt;td&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt; &amp;gt;&amp;nbsp;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;
&lt;p style="margin: 0pt; padding-top: 0px; padding-bottom: 0px;" align="left"&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt;evalf(subs(x=-2,diff((sin((x^2)/(x^4+1))*exp(2*x)),x$10)),10);&lt;/span&gt;&lt;/p&gt;
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&lt;td style="color: #000000; font-family: Times,serif; font-weight: bold; font-style: normal;" align="right"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; (1)&lt;/td&gt;
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&lt;td&gt;
&lt;p style="margin: 0pt; padding-top: 0px; padding-bottom: 0px;" align="left"&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt;&amp;nbsp; &lt;/span&gt;&lt;/p&gt;
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&lt;p&gt;&lt;a href="/view.aspx?sf=104228/337943/expdiff.mw"&gt;Download expdiff.mw&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Regards,&lt;/p&gt;
&lt;p&gt;Georgios Kokovidis&lt;/p&gt;
&lt;p&gt;Dr&amp;auml;ger Medical&lt;/p&gt;</itunes:summary>
      <description>&lt;!--break--&gt;
&lt;p&gt;The exponential function, exp(x), calculates the value of e to the power of x, where e is the base of the natural logarithm, 2.718281828... .&lt;/p&gt;
&lt;form name="worksheet_form"&gt;
&lt;table style="width: 576px;" align="center"&gt;
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&lt;td&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt; &amp;gt;&amp;nbsp;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;
&lt;p style="margin: 0pt; padding-top: 0px; padding-bottom: 0px;" align="left"&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt;restart:&lt;/span&gt;&lt;/p&gt;
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&lt;td&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt; &amp;gt;&amp;nbsp;&lt;/span&gt;&lt;/td&gt;
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&lt;p style="margin: 0pt; padding-top: 0px; padding-bottom: 0px;" align="left"&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt;?exp&lt;/span&gt;&lt;/p&gt;
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&lt;td&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt; &amp;gt;&amp;nbsp;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;
&lt;p style="margin: 0pt; padding-top: 0px; padding-bottom: 0px;" align="left"&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt;evalf(subs(x=-2,diff((sin((x^2)/(x^4+1))*exp(2*x)),x$10)),10);&lt;/span&gt;&lt;/p&gt;
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&lt;td style="color: #000000; font-family: Times,serif; font-weight: bold; font-style: normal;" align="right"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; (1)&lt;/td&gt;
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&lt;p style="margin: 0pt; padding-top: 0px; padding-bottom: 0px;" align="left"&gt;&lt;span style="color: #ff0000; font-size: 100%; font-family: Courier New,monospace; font-weight: bold; font-style: normal;"&gt;&amp;nbsp; &lt;/span&gt;&lt;/p&gt;
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&lt;input type="hidden" name="sequence" value="1"&gt;&lt;/form&gt;
&lt;p&gt;&lt;a href="/view.aspx?sf=104228/337943/expdiff.mw"&gt;Download expdiff.mw&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Regards,&lt;/p&gt;
&lt;p&gt;Georgios Kokovidis&lt;/p&gt;
&lt;p&gt;Dr&amp;auml;ger Medical&lt;/p&gt;</description>
      <guid>104228</guid>
      <pubDate>Thu, 14 Apr 2011 04:51:34 Z</pubDate>
      <itunes:author>gkokovidis</itunes:author>
      <author>gkokovidis</author>
    </item>
    <item>
      <title>more explanation</title>
      <link>http://www.mapleprimes.com/questions/104227-Differentiating-A-Function-And-Then-Evaluating-It?ref=Feed:MaplePrimes:Differentiating a function and then evaluating it:Comments#answer104262</link>
      <itunes:summary>&lt;p&gt;Writing e^x for the exponential function is your error. &amp;nbsp;It is very common among beginners with Maple, and still is found occasionally among experienced users of Maple.&lt;/p&gt;
&lt;!--break--&gt;
&lt;p&gt;---&lt;/p&gt;
&lt;p&gt;G A Edgar&lt;/p&gt;</itunes:summary>
      <description>&lt;p&gt;Writing e^x for the exponential function is your error. &amp;nbsp;It is very common among beginners with Maple, and still is found occasionally among experienced users of Maple.&lt;/p&gt;
&lt;!--break--&gt;
&lt;p&gt;---&lt;/p&gt;
&lt;p&gt;G A Edgar&lt;/p&gt;</description>
      <guid>104262</guid>
      <pubDate>Thu, 14 Apr 2011 18:09:24 Z</pubDate>
      <itunes:author>edgar</itunes:author>
      <author>edgar</author>
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    <item>
      <title>Thanks!</title>
      <link>http://www.mapleprimes.com/questions/104227-Differentiating-A-Function-And-Then-Evaluating-It?ref=Feed:MaplePrimes:Differentiating a function and then evaluating it:Comments#comment104285</link>
      <itunes:summary>&lt;p&gt;Thankyou so much!&lt;/p&gt;</itunes:summary>
      <description>&lt;p&gt;Thankyou so much!&lt;/p&gt;</description>
      <guid>104285</guid>
      <pubDate>Fri, 15 Apr 2011 02:38:20 Z</pubDate>
      <itunes:author>dennis995</itunes:author>
      <author>dennis995</author>
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      <title>Cant believe I didnt notice that before,</title>
      <link>http://www.mapleprimes.com/questions/104227-Differentiating-A-Function-And-Then-Evaluating-It?ref=Feed:MaplePrimes:Differentiating a function and then evaluating it:Comments#comment104286</link>
      <itunes:summary>&lt;p&gt;Cant believe I didnt notice that before, thankyou!&lt;/p&gt;</itunes:summary>
      <description>&lt;p&gt;Cant believe I didnt notice that before, thankyou!&lt;/p&gt;</description>
      <guid>104286</guid>
      <pubDate>Fri, 15 Apr 2011 02:39:04 Z</pubDate>
      <itunes:author>dennis995</itunes:author>
      <author>dennis995</author>
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