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    <title>MaplePrimes - answers and comments on Question, 'Family' of surfaces in 3D, how constants change shape</title>
    <link>http://www.mapleprimes.com/questions/101050-Family-Of-Surfaces-In-3D-How-Constants</link>
    <language>en-us</language>
    <copyright>2026 Maplesoft, A Division of Waterloo Maple Inc.</copyright>
    <generator>Maplesoft Document System</generator>
    <lastBuildDate>Thu, 11 Jun 2026 22:54:56 GMT</lastBuildDate>
    <pubDate>Thu, 11 Jun 2026 22:54:56 GMT</pubDate>
    <itunes:subtitle />
    <itunes:summary />
    <description>The latest answers and comments added to the Question, 'Family' of surfaces in 3D, how constants change shape</description>
    <image>
      <url>http://www.mapleprimes.com/images/mapleprimeswhite.jpg</url>
      <title>MaplePrimes - answers and comments on Question, 'Family' of surfaces in 3D, how constants change shape</title>
      <link>http://www.mapleprimes.com/questions/101050-Family-Of-Surfaces-In-3D-How-Constants</link>
    </image>
    <item>
      <title>By Explore</title>
      <link>http://www.mapleprimes.com/questions/101050-Family-Of-Surfaces-In-3D-How-Constants?ref=Feed:MaplePrimes:'Family' of surfaces in 3D, how constants change shape:Comments#answer101051</link>
      <itunes:summary>&lt;p&gt;Look at &lt;a href="http://www.maplesoft.com/support/help/search.aspx?term=Explore"&gt;?Explore&lt;/a&gt; .&lt;/p&gt;
&lt;p&gt;Explore(plot3d((a*x^2+b*y^2)*exp(-x^2-y^2), x = -2 .. 2, y = -2 .. 2));&lt;/p&gt;
&lt;p&gt;PS. Skip x and y.&lt;/p&gt;
&lt;p&gt;PPS. See also &lt;a href="http://www.maplesoft.com/support/help/search.aspx?term=Using"&gt;Using &lt;/a&gt;the Exploration Assistant in &lt;a href='http://www.maplesoft.com/support/help/search.aspx?term=Explore' target='_new'&gt;?Explore&lt;/a&gt; .&lt;/p&gt;</itunes:summary>
      <description>&lt;p&gt;Look at &lt;a href="http://www.maplesoft.com/support/help/search.aspx?term=Explore"&gt;?Explore&lt;/a&gt; .&lt;/p&gt;
&lt;p&gt;Explore(plot3d((a*x^2+b*y^2)*exp(-x^2-y^2), x = -2 .. 2, y = -2 .. 2));&lt;/p&gt;
&lt;p&gt;PS. Skip x and y.&lt;/p&gt;
&lt;p&gt;PPS. See also &lt;a href="http://www.maplesoft.com/support/help/search.aspx?term=Using"&gt;Using &lt;/a&gt;the Exploration Assistant in &lt;a href='http://www.maplesoft.com/support/help/search.aspx?term=Explore' target='_new'&gt;?Explore&lt;/a&gt; .&lt;/p&gt;</description>
      <guid>101051</guid>
      <pubDate>Fri, 21 Jan 2011 00:10:49 Z</pubDate>
      <itunes:author>hirnyk</itunes:author>
      <author>hirnyk</author>
    </item>
    <item>
      <title>float sliders</title>
      <link>http://www.mapleprimes.com/questions/101050-Family-Of-Surfaces-In-3D-How-Constants?ref=Feed:MaplePrimes:'Family' of surfaces in 3D, how constants change shape:Comments#comment101052</link>
      <itunes:summary>&lt;p&gt;You might also want to make the end-points for the a-slider and b-slider be floating point values. Ie, 10.0 instead of 10 the exact integer. That will allow for more smoothly varying values of a and b, not just integer values. This is not related to the check-box "floating-point computation" in the Explore pop-up.&lt;/p&gt;
&lt;p&gt;Notice what happens when, for some fixed a, b slides from being less than a to being greater than a. And vice versa.&lt;/p&gt;</itunes:summary>
      <description>&lt;p&gt;You might also want to make the end-points for the a-slider and b-slider be floating point values. Ie, 10.0 instead of 10 the exact integer. That will allow for more smoothly varying values of a and b, not just integer values. This is not related to the check-box "floating-point computation" in the Explore pop-up.&lt;/p&gt;
&lt;p&gt;Notice what happens when, for some fixed a, b slides from being less than a to being greater than a. And vice versa.&lt;/p&gt;</description>
      <guid>101052</guid>
      <pubDate>Fri, 21 Jan 2011 00:39:15 Z</pubDate>
      <itunes:author>pagan</itunes:author>
      <author>pagan</author>
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