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	<id>https://drorbn.net/index.php?action=history&amp;feed=atom&amp;title=08-401%2FHomework_Assignment_7</id>
	<title>08-401/Homework Assignment 7 - Revision history</title>
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	<updated>2026-05-20T00:07:39Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://drorbn.net/index.php?title=08-401/Homework_Assignment_7&amp;diff=6941&amp;oldid=prev</id>
		<title>Yangjiay at 00:45, 6 April 2008</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=08-401/Homework_Assignment_7&amp;diff=6941&amp;oldid=prev"/>
		<updated>2008-04-06T00:45:58Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 20:45, 5 April 2008&lt;/td&gt;
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  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 13:&lt;/td&gt;
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  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This assignment is due in class on Wednesday March 19, 2008.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This assignment is due in class on Wednesday March 19, 2008.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
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  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br /&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br /&gt;&lt;/td&gt;
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  &lt;td colspan=&quot;2&quot; class=&quot;diff-empty diff-side-deleted&quot;&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Here is the solution upload by yangjiay&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-empty diff-side-deleted&quot;&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;http://katlas.math.toronto.edu/drorbn/images/2/2c/Solution_Assignment_7.pdf&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===Just for Fun===&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===Just for Fun===&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Geometric constructions are related to fields (see it in another way by reading/solving questions 1-4 on pages 394-5 of our text). A related fact is that using &quot;geometrical machines&quot; one can build &quot;analog computers&quot; that are able to &quot;compute&quot; polynomials. For your own entertainment and for that alone, spend some time studying Dori Eldar&#039;s java-based interactive site on [http://www.math.toronto.edu/~drorbn/People/Eldar/thesis/comutational_linkages.htm Linkages as Functions] and in particular play with gigantic [http://www.math.toronto.edu/~drorbn/People/Eldar/thesis/squaring.htm squaring machine] (drag the green dot, read the output in red). While you are at it, spend some time pondering the relationship between Eldar&#039;s &quot;machines&quot; and our class material. The subjects are not exactly the same, yet not entirely different either.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Geometric constructions are related to fields (see it in another way by reading/solving questions 1-4 on pages 394-5 of our text). A related fact is that using &quot;geometrical machines&quot; one can build &quot;analog computers&quot; that are able to &quot;compute&quot; polynomials. For your own entertainment and for that alone, spend some time studying Dori Eldar&#039;s java-based interactive site on [http://www.math.toronto.edu/~drorbn/People/Eldar/thesis/comutational_linkages.htm Linkages as Functions] and in particular play with gigantic [http://www.math.toronto.edu/~drorbn/People/Eldar/thesis/squaring.htm squaring machine] (drag the green dot, read the output in red). While you are at it, spend some time pondering the relationship between Eldar&#039;s &quot;machines&quot; and our class material. The subjects are not exactly the same, yet not entirely different either.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;

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&lt;/table&gt;</summary>
		<author><name>Yangjiay</name></author>
	</entry>
	<entry>
		<id>https://drorbn.net/index.php?title=08-401/Homework_Assignment_7&amp;diff=6700&amp;oldid=prev</id>
		<title>Drorbn: /* Due Date */</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=08-401/Homework_Assignment_7&amp;diff=6700&amp;oldid=prev"/>
		<updated>2008-03-14T18:37:02Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Due Date&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 14:37, 14 March 2008&lt;/td&gt;
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  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br /&gt;&lt;/td&gt;
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  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===Due Date===&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===Due Date===&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This assignment is due in class on Wednesday March &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;17&lt;/del&gt;, 2008.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This assignment is due in class on Wednesday March &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;19&lt;/ins&gt;, 2008.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
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  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br /&gt;&lt;/td&gt;
&lt;/tr&gt;
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  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===Just for Fun===&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===Just for Fun===&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;

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&lt;/table&gt;</summary>
		<author><name>Drorbn</name></author>
	</entry>
	<entry>
		<id>https://drorbn.net/index.php?title=08-401/Homework_Assignment_7&amp;diff=6660&amp;oldid=prev</id>
		<title>Drorbn at 02:50, 13 March 2008</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=08-401/Homework_Assignment_7&amp;diff=6660&amp;oldid=prev"/>
		<updated>2008-03-13T02:50:01Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{08-401/Navigation}}&lt;br /&gt;
&lt;br /&gt;
===Reading===&lt;br /&gt;
Read chapters 21 (excluding theorem 21.6) and 23 of Gallian&amp;#039;s book (&amp;#039;&amp;#039;&amp;#039;6th edition&amp;#039;&amp;#039;&amp;#039;) three times:&lt;br /&gt;
* First time as if you were reading a novel - quickly and without too much attention to detail, just to learn what the main keywords and concepts and goals are.&lt;br /&gt;
* Second time like you were studying for an exam on the subject - slowly and not skipping anything, verifying every little detail.&lt;br /&gt;
* And then a third time, again at a quicker pace, to remind yourself of the bigger picture all those little details are there to paint.&lt;br /&gt;
&lt;br /&gt;
===Doing===&lt;br /&gt;
Solve problems 3, 5, &amp;#039;&amp;#039;&amp;#039;S6&amp;#039;&amp;#039;&amp;#039;, 7, &amp;#039;&amp;#039;&amp;#039;S8&amp;#039;&amp;#039;&amp;#039;, 9, 11, &amp;#039;&amp;#039;&amp;#039;S12&amp;#039;&amp;#039;&amp;#039;, &amp;#039;&amp;#039;&amp;#039;S13&amp;#039;&amp;#039;&amp;#039;, 14, &amp;#039;&amp;#039;&amp;#039;S16&amp;#039;&amp;#039;&amp;#039;, &amp;#039;&amp;#039;&amp;#039;S18&amp;#039;&amp;#039;&amp;#039;, 22, 34 in Chapter 21 of Gallian&amp;#039;s book (&amp;#039;&amp;#039;&amp;#039;6th edition&amp;#039;&amp;#039;&amp;#039;) and problems 1-5 in Chapter 23 of the same book, but submit only the solutions of the problems marked with the letter &amp;quot;S&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
===Due Date===&lt;br /&gt;
This assignment is due in class on Wednesday March 17, 2008.&lt;br /&gt;
&lt;br /&gt;
===Just for Fun===&lt;br /&gt;
Geometric constructions are related to fields (see it in another way by reading/solving questions 1-4 on pages 394-5 of our text). A related fact is that using &amp;quot;geometrical machines&amp;quot; one can build &amp;quot;analog computers&amp;quot; that are able to &amp;quot;compute&amp;quot; polynomials. For your own entertainment and for that alone, spend some time studying Dori Eldar&amp;#039;s java-based interactive site on [http://www.math.toronto.edu/~drorbn/People/Eldar/thesis/comutational_linkages.htm Linkages as Functions] and in particular play with gigantic [http://www.math.toronto.edu/~drorbn/People/Eldar/thesis/squaring.htm squaring machine] (drag the green dot, read the output in red). While you are at it, spend some time pondering the relationship between Eldar&amp;#039;s &amp;quot;machines&amp;quot; and our class material. The subjects are not exactly the same, yet not entirely different either.&lt;br /&gt;
&lt;br /&gt;
&amp;lt;center&amp;gt;http://www.math.toronto.edu/~drorbn/classes/0304/157AnalysisI/HW25/SquaringMachine.gif&amp;lt;/center&amp;gt;&lt;/div&gt;</summary>
		<author><name>Drorbn</name></author>
	</entry>
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