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en-us2020 Maplesoft, A Division of Waterloo Maple Inc.Maplesoft Document SystemSun, 26 Jan 2020 20:47:01 GMTSun, 26 Jan 2020 20:47:01 GMTThe latest comments and answers added to MaplePrimeshttp://www.mapleprimes.com/images/mapleprimeswhite.jpgMaplePrimes - Newest Comments
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solve fails
https://www.mapleprimes.com/questions/228753-How-To-Find-Necessary-Condition-For?ref=Feed:MaplePrimes:New Comments#comment265416
<p><a href="/questions/228753-How-To-Find-Necessary-Condition-For#answer265408">@Kitonum</a> </p>
<p>You are right. I was fooled by Maple's <strong>solve</strong>. I am disappointed that Maple fails for a <u>simple rational polynomial system</u>:</p>
<pre class="prettyprint">
sys := [x^2 + y^2 - x*y - 1 = 0, y^2 + z^2 - y*z - a^2 = 0, z^2 + x^2 - x*z - b^2 = 0]:
ab:={a=10,b=104/10}:
solve(eval(sys,ab), allsolutions):
evalf[20]([%]);
</pre>
<p> [{x = 1.1419533726022634876, y = 0.42279817537010308072, z = -9.7818952278636396166}]</p>
<p> </p>
<p><a href="/questions/228753-How-To-Find-Necessary-Condition-For#answer265408">@Kitonum</a> </p>
<p>You are right. I was fooled by Maple's <strong>solve</strong>. I am disappointed that Maple fails for a <u>simple rational polynomial system</u>:</p>
<pre class="prettyprint">
sys := [x^2 + y^2 - x*y - 1 = 0, y^2 + z^2 - y*z - a^2 = 0, z^2 + x^2 - x*z - b^2 = 0]:
ab:={a=10,b=104/10}:
solve(eval(sys,ab), allsolutions):
evalf[20]([%]);
</pre>
<p> [{x = 1.1419533726022634876, y = 0.42279817537010308072, z = -9.7818952278636396166}]</p>
<p> </p>
265416Sun, 26 Jan 2020 20:41:16 Zvvvv@acer This works beautifully when added to maple.i...
https://www.mapleprimes.com/questions/228752-Explore-Slider-Label-Precision?ref=Feed:MaplePrimes:New Comments#comment265415
<p><a href="/questions/228752-Explore-Slider-Label-Precision#answer265395">@acer</a> This works beautifully when added to maple.ini, thank you!</p>
<p>An intuitive way to expand this could be for maple to watch for the number of digits that the user provides in the range. For example, if the user says x=10.5..11.5 then show 1 decimal place in the resulting GUI controls, if 3 decimals are desired then the user can enter x=10.500..11.500. However, this simple approach has a limitation in that it does not allow for displaying fewer decimal places than are provided in the range. I think the TextArea improvement mentioned above or something along those lines would be a better approach.</p>
<p>Thanks.</p>
<p><a href="/questions/228752-Explore-Slider-Label-Precision#answer265395">@acer</a> This works beautifully when added to maple.ini, thank you!</p>
<p>An intuitive way to expand this could be for maple to watch for the number of digits that the user provides in the range. For example, if the user says x=10.5..11.5 then show 1 decimal place in the resulting GUI controls, if 3 decimals are desired then the user can enter x=10.500..11.500. However, this simple approach has a limitation in that it does not allow for displaying fewer decimal places than are provided in the range. I think the TextArea improvement mentioned above or something along those lines would be a better approach.</p>
<p>Thanks.</p>
265415Sun, 26 Jan 2020 20:41:08 Zopus64opus64permute
https://www.mapleprimes.com/questions/228756-Generate-Permutations-Of-A-List?ref=Feed:MaplePrimes:New Comments#answer265414
<p>If I enter the word <strong>permute</strong> in the Help search then the top result is for the command <strong>combinat:-permute</strong>.</p>
<p>That returns the permutations of a list.</p>
<p>But that Help pages also has a cross-reference to the parent <strong>combinat</strong> package, whose page shows links to <strong>numbperm</strong>, <strong>nextperm</strong>, etc.</p>
<p> </p>
<p> </p>
<p>If I enter the word <strong>permute</strong> in the Help search then the top result is for the command <strong>combinat:-permute</strong>.</p>
<p>That returns the permutations of a list.</p>
<p>But that Help pages also has a cross-reference to the parent <strong>combinat</strong> package, whose page shows links to <strong>numbperm</strong>, <strong>nextperm</strong>, etc.</p>
<p> </p>
<p> </p>
265414Sun, 26 Jan 2020 20:20:45 Zaceracercombinat:-permute
https://www.mapleprimes.com/questions/228756-Generate-Permutations-Of-A-List?ref=Feed:MaplePrimes:New Comments#answer265413
<p>Example:</p>
<pre class="prettyprint">
combinat:-permute([a,b,c,d]);</pre>
<p> [[a, b, c, d], [a, b, d, c], [a, c, b, d], [a, c, d, b], [a, d, b, c], [a, d, c, b], [b, a, c, d], [b, a, d, c], [b, c, a, d], [b, c, d, a], [b, d, a, c], [b, d, c, a], [c, a, b, d], [c, a, d, b], [c, b, a, d], [c, b, d, a], [c, d, a, b], [c, d, b, a], [d, a, b, c], [d, a, c, b], [d, b, a, c], [d, b, c, a], [d, c, a, b], [d, c, b, a]] </p>
<p>Example:</p>
<pre class="prettyprint">
combinat:-permute([a,b,c,d]);</pre>
<p> [[a, b, c, d], [a, b, d, c], [a, c, b, d], [a, c, d, b], [a, d, b, c], [a, d, c, b], [b, a, c, d], [b, a, d, c], [b, c, a, d], [b, c, d, a], [b, d, a, c], [b, d, c, a], [c, a, b, d], [c, a, d, b], [c, b, a, d], [c, b, d, a], [c, d, a, b], [c, d, b, a], [d, a, b, c], [d, a, c, b], [d, b, a, c], [d, b, c, a], [d, c, a, b], [d, c, b, a]] </p>
265413Sun, 26 Jan 2020 20:17:12 ZKitonumKitonumHappens to us all
https://www.mapleprimes.com/questions/228752-Explore-Slider-Label-Precision?ref=Feed:MaplePrimes:New Comments#comment265412
<p><a href="/questions/228752-Explore-Slider-Label-Precision#comment265411">@Scot Gould</a> No worries; typos happen to us all. On MaplePrimes, I can almost always figure out the intended meaning, but this time the "is" threw me off (especially since there is an <strong>is</strong> command in Maple).</p>
<p><a href="/questions/228752-Explore-Slider-Label-Precision#comment265411">@Scot Gould</a> No worries; typos happen to us all. On MaplePrimes, I can almost always figure out the intended meaning, but this time the "is" threw me off (especially since there is an <strong>is</strong> command in Maple).</p>
265412Sun, 26 Jan 2020 20:01:51 ZCarl LoveCarl LoveNative speaker
https://www.mapleprimes.com/questions/228752-Explore-Slider-Label-Precision?ref=Feed:MaplePrimes:New Comments#comment265411
<p><a href="/questions/228752-Explore-Slider-Label-Precision#comment265410">@Carl Love</a> English is my native tongue for which I am incapable of communicating in via the keyboard. Sorry for the typo. </p>
<p><a href="/questions/228752-Explore-Slider-Label-Precision#comment265410">@Carl Love</a> English is my native tongue for which I am incapable of communicating in via the keyboard. Sorry for the typo. </p>
265411Sun, 26 Jan 2020 19:39:59 ZScot GouldScot Gould