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  <channel>
    <title>MaplePrimes - Maple V Posts and Questions</title>
    <link>http://www.mapleprimes.com/products/Maple/Maple V</link>
    <language>en-us</language>
    <copyright>2026 Maplesoft, A Division of Waterloo Maple Inc.</copyright>
    <generator>Maplesoft Document System</generator>
    <lastBuildDate>Sun, 05 Apr 2026 00:31:07 GMT</lastBuildDate>
    <pubDate>Sun, 05 Apr 2026 00:31:07 GMT</pubDate>
    <itunes:subtitle />
    <itunes:summary />
    <description>Maple V Questions and Posts on MaplePrimes</description>
    <image>
      <url>http://www.mapleprimes.com/images/mapleprimeswhite.jpg</url>
      <title>MaplePrimes - Maple V Posts and Questions</title>
      <link>http://www.mapleprimes.com/products/Maple/Maple V</link>
    </image>
    <item>
      <title>Result is different everytime</title>
      <link>http://www.mapleprimes.com/questions/234946-Result-Is-Different-Everytime?ref=Feed:MaplePrimes:Version Maple V</link>
      <itunes:summary>&lt;p&gt;Hello,&lt;/p&gt;

&lt;p&gt;I&amp;#39;m in the process of making a resonant LLC calculator to define Lr,Lm and Cr. In short, to do this I need to define the fonction of the Gain for different Qualifty factor at a given m value m. My issue is that the below code&amp;nbsp;returns different results everytime. I&amp;#39;m trying to get the value at the top of the Q curve using the maximise fonction and trying to solve wx for that maximum value. Anybody can see what am I doing wrong. Sometime it outpiuts an imaginary number where sometime it doesn&amp;#39;t. The expression seems correct as its producing the correct plot/curve.&lt;/p&gt;

&lt;p&gt;Thank you for the help.&lt;/p&gt;

&lt;p&gt;&amp;gt; restart:with(plots):&lt;br&gt;
&amp;gt; m:=6.3:&lt;br&gt;
&amp;gt; Q1:=1:&lt;br&gt;
&amp;gt; GainQ1:=(8/(Pi^2))*((wx^2)*(m-1))/(sqrt((((m*wx^2)-1)^2)+(Q1^2*wx^2)*((wx^2-1)^2)*((m-1)^2))):&lt;br&gt;
&amp;gt; semilogplot({GainQ1},wx=0.2...2,Gain,axes=boxed,thickness=5,title=`Gain (w, Q, m)`):&lt;br&gt;
&amp;gt; Top_of_Q1:=eval(maximize(GainQ1),wx=0.1..2);wx:=solve(GainQ1=Top_of_Q1);&lt;br&gt;
&amp;nbsp;&lt;/p&gt;
</itunes:summary>
      <description>&lt;p&gt;Hello,&lt;/p&gt;

&lt;p&gt;I&amp;#39;m in the process of making a resonant LLC calculator to define Lr,Lm and Cr. In short, to do this I need to define the fonction of the Gain for different Qualifty factor at a given m value m. My issue is that the below code&amp;nbsp;returns different results everytime. I&amp;#39;m trying to get the value at the top of the Q curve using the maximise fonction and trying to solve wx for that maximum value. Anybody can see what am I doing wrong. Sometime it outpiuts an imaginary number where sometime it doesn&amp;#39;t. The expression seems correct as its producing the correct plot/curve.&lt;/p&gt;

&lt;p&gt;Thank you for the help.&lt;/p&gt;

&lt;p&gt;&amp;gt; restart:with(plots):&lt;br /&gt;
&amp;gt; m:=6.3:&lt;br /&gt;
&amp;gt; Q1:=1:&lt;br /&gt;
&amp;gt; GainQ1:=(8/(Pi^2))*((wx^2)*(m-1))/(sqrt((((m*wx^2)-1)^2)+(Q1^2*wx^2)*((wx^2-1)^2)*((m-1)^2))):&lt;br /&gt;
&amp;gt; semilogplot({GainQ1},wx=0.2...2,Gain,axes=boxed,thickness=5,title=`Gain (w, Q, m)`):&lt;br /&gt;
&amp;gt; Top_of_Q1:=eval(maximize(GainQ1),wx=0.1..2);wx:=solve(GainQ1=Top_of_Q1);&lt;br /&gt;
&amp;nbsp;&lt;/p&gt;
</description>
      <guid>234946</guid>
      <pubDate>Fri, 07 Oct 2022 15:26:28 Z</pubDate>
      <itunes:author>jediknight</itunes:author>
      <author>jediknight</author>
    </item>
    <item>
      <title>Can someone run this application change the center and send me the image and the generated code? I can pay by Paypal</title>
      <link>http://www.mapleprimes.com/questions/232412-Can-Someone-Run-This-Application-Change?ref=Feed:MaplePrimes:Version Maple V</link>
      <itunes:summary>&lt;p&gt;&lt;br&gt;
&lt;a href="https://www.maplesoft.com/applications/view.aspx?SID=3589&amp;amp;view=html"&gt;https://www.maplesoft.com/applications/view.aspx?SID=3589&amp;amp;view=html&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;img alt="[Maple Plot]" src="https://www.maplesoft.com/view.aspx?SI=3589/pierce31.gif"&gt;&lt;/p&gt;

&lt;p&gt;&lt;img alt="[Maple Plot]" src="https://www.maplesoft.com/view.aspx?SI=3589/pierce23.gif"&gt;&lt;/p&gt;

&lt;p&gt;&amp;nbsp;&lt;/p&gt;
</itunes:summary>
      <description>&lt;p&gt;&lt;br&gt;
&lt;a href="https://www.maplesoft.com/applications/view.aspx?SID=3589&amp;amp;view=html"&gt;https://www.maplesoft.com/applications/view.aspx?SID=3589&amp;amp;view=html&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;img alt="[Maple Plot]" src="https://www.maplesoft.com/view.aspx?SI=3589/pierce31.gif"&gt;&lt;/p&gt;

&lt;p&gt;&lt;img alt="[Maple Plot]" src="https://www.maplesoft.com/view.aspx?SI=3589/pierce23.gif"&gt;&lt;/p&gt;

&lt;p&gt;&amp;nbsp;&lt;/p&gt;
</description>
      <guid>232412</guid>
      <pubDate>Fri, 11 Jun 2021 20:59:54 Z</pubDate>
      <itunes:author>claudiosurface</itunes:author>
      <author>claudiosurface</author>
    </item>
    <item>
      <title>Can I still use Professor Lopez's "Discovering Calculus with Maple"?</title>
      <link>http://www.mapleprimes.com/questions/230704-Can-I-Still-Use-Professor-Lopezs-Discovering?ref=Feed:MaplePrimes:Version Maple V</link>
      <itunes:summary>&lt;p&gt;Professor Robert J. Lopez is a Maple Fellow and the author of many Maple webinars and applications. He is also co-author of a book entitled &lt;em&gt;Discovering Calculus With Maple&lt;/em&gt;, which I have recently acquired, and which turns out to be keyed to Maple V Release 3 on a Mac. Well, I have Maple 2020 on a Mac. What is the best way to get this book to work for me?&amp;nbsp; Thanks very much.&lt;/p&gt;
</itunes:summary>
      <description>&lt;p&gt;Professor Robert J. Lopez is a Maple Fellow and the author of many Maple webinars and applications. He is also co-author of a book entitled &lt;em&gt;Discovering Calculus With Maple&lt;/em&gt;, which I have recently acquired, and which turns out to be keyed to Maple V Release 3 on a Mac. Well, I have Maple 2020 on a Mac. What is the best way to get this book to work for me?&amp;nbsp; Thanks very much.&lt;/p&gt;
</description>
      <guid>230704</guid>
      <pubDate>Mon, 05 Oct 2020 01:35:18 Z</pubDate>
      <itunes:author>htaylor4</itunes:author>
      <author>htaylor4</author>
    </item>
    <item>
      <title>Something  chanced in DEtools ?</title>
      <link>http://www.mapleprimes.com/questions/230412-Something--Chanced-In-DEtools-?ref=Feed:MaplePrimes:Version Maple V</link>
      <itunes:summary>&lt;p&gt;&lt;a href="/view.aspx?sf=230412_question/CH10A.MWS"&gt;CH10A.MWS&lt;/a&gt;&lt;/p&gt;
</itunes:summary>
      <description>&lt;p&gt;&lt;a href="/view.aspx?sf=230412_question/CH10A.MWS"&gt;CH10A.MWS&lt;/a&gt;&lt;/p&gt;
</description>
      <guid>230412</guid>
      <pubDate>Thu, 27 Aug 2020 14:39:28 Z</pubDate>
      <itunes:author>janhardo</itunes:author>
      <author>janhardo</author>
    </item>
    <item>
      <title>             Murtazin Shamil, 7th grade</title>
      <link>http://www.mapleprimes.com/posts/210812--------------Murtazin-Shamil-7th-Grade?ref=Feed:MaplePrimes:Version Maple V</link>
      <itunes:summary>&lt;p style="text-align: center;"&gt;&lt;span style="color:#A52A2A;"&gt;&lt;span style="font-size:18px;"&gt;Hare in the forest&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

&lt;p style="text-align: center;"&gt;&lt;img src="/view.aspx?sf=210812_post/Hare_in_the_forest.gif"&gt;&lt;/p&gt;
</itunes:summary>
      <description>&lt;p style="text-align: center;"&gt;&lt;span style="color:#A52A2A;"&gt;&lt;span style="font-size:18px;"&gt;Hare in the forest&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

&lt;p style="text-align: center;"&gt;&lt;img src="/view.aspx?sf=210812_post/Hare_in_the_forest.gif" /&gt;&lt;/p&gt;
</description>
      <guid>210812</guid>
      <pubDate>Thu, 04 Jul 2019 15:28:11 Z</pubDate>
      <itunes:author>Alsu</itunes:author>
      <author>Alsu</author>
    </item>
    <item>
      <title> Bilnov Yevgeniy, 7th grade</title>
      <link>http://www.mapleprimes.com/posts/210811--Bilnov-Yevgeniy-7th-Grade?ref=Feed:MaplePrimes:Version Maple V</link>
      <itunes:summary>&lt;p style="text-align: center;"&gt;&lt;span style="color:#FF8C00;"&gt;&lt;span style="font-size:18px;"&gt;The rocket flies&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

&lt;p style="text-align: center;"&gt;&lt;img src="/view.aspx?sf=210811_post/Raketa_letit_1.gif" style="float: left;"&gt;&amp;nbsp;&amp;nbsp;&lt;img src="/view.aspx?sf=210811_post/Raketa_letit_2.gif"&gt;&lt;/p&gt;

&lt;p style="text-align: center;"&gt;&lt;a href="/view.aspx?sf=210811_post/Быльнов_raketa_letit.mws"&gt;Быльнов_raketa_letit.mws&lt;/a&gt;&lt;/p&gt;
</itunes:summary>
      <description>&lt;p style="text-align: center;"&gt;&lt;span style="color:#FF8C00;"&gt;&lt;span style="font-size:18px;"&gt;The rocket flies&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

&lt;p style="text-align: center;"&gt;&lt;img src="/view.aspx?sf=210811_post/Raketa_letit_1.gif" style="float: left;"&gt;&amp;nbsp;&amp;nbsp;&lt;img src="/view.aspx?sf=210811_post/Raketa_letit_2.gif"&gt;&lt;/p&gt;

&lt;p style="text-align: center;"&gt;&lt;a href="/view.aspx?sf=210811_post/Быльнов_raketa_letit.mws"&gt;Быльнов_raketa_letit.mws&lt;/a&gt;&lt;/p&gt;
</description>
      <guid>210811</guid>
      <pubDate>Thu, 04 Jul 2019 14:46:38 Z</pubDate>
      <itunes:author>Alsu</itunes:author>
      <author>Alsu</author>
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