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		<title>3.3 Lösning 3c - Versionshistorik</title>
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	<entry>
		<id>https://wiki.mattekollen.se/index.php?title=3.3_L%C3%B6sning_3c&amp;diff=19973&amp;oldid=prev</id>
		<title>Taifun den 10 januari 2015 kl. 12.19</title>
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				<updated>2015-01-10T12:19:30Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Ny sida&lt;/b&gt;&lt;/p&gt;&lt;div&gt;:&amp;lt;math&amp;gt;\begin{array}{rcl} f(x)  &amp;amp; = &amp;amp; x^4     \\&lt;br /&gt;
                          f'(x) &amp;amp; = &amp;amp; 4\,x^3  \\ &lt;br /&gt;
                         f''(x) &amp;amp; = &amp;amp; 12\,x^2 \\&lt;br /&gt;
                      f'''(x)   &amp;amp; = &amp;amp; 24\,x        &lt;br /&gt;
       \end{array}&amp;lt;/math&amp;gt;&lt;br /&gt;
&lt;br /&gt;
:&amp;lt;math&amp;gt;\begin{array}{rcl} f'(0) &amp;amp; = &amp;amp; 4 \cdot 0^3 \, = \, 4 \cdot 0 \, = \, 0 \\ &lt;br /&gt;
                         f''(0) &amp;amp; = &amp;amp; 12 \cdot 0^2 \, = \, 12 \cdot 0 \, = \, 0 \\&lt;br /&gt;
                      f'''(0)   &amp;amp; = &amp;amp; 24 \cdot 0 \, = \, 0         &lt;br /&gt;
       \end{array}&amp;lt;/math&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Enligt [[3.3_Terasspunkter#Regler_om_terasspunkter_med_h.C3.B6gre_derivator|&amp;lt;strong&amp;gt;&amp;lt;span style=&amp;quot;color:blue&amp;quot;&amp;gt;regeln om terasspunkter med högre derivator&amp;lt;/span&amp;gt;&amp;lt;/strong&amp;gt;]]&amp;lt;span style=&amp;quot;color:black&amp;quot;&amp;gt;:&amp;lt;/span&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&amp;lt;math&amp;gt; \, f\,'(0) \, = \, f\,''(0) \, = \, f\,'''(0) \, = \, 0 \quad \Longrightarrow \quad f(x) \, &amp;lt;/math&amp;gt; har ingen terasspunkt i &amp;lt;math&amp;gt; \, x = 0 \, &amp;lt;/math&amp;gt;.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
Om &amp;lt;math&amp;gt; \, f\,'''(0) \neq 0 \, &amp;lt;/math&amp;gt; hade &amp;lt;math&amp;gt; \, x = 0 \, &amp;lt;/math&amp;gt; varit en terasspunkt.&lt;/div&gt;</summary>
		<author><name>Taifun</name></author>	</entry>

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