&lt;h4&gt;&lt;/h4&gt;&lt;h3&gt;&lt;span style=&quot;color: rgb(156, 0, 255); font-weight: bold; font-family: &quot; courier=&quot;&quot; new&quot;;&quot;=&quot;&quot;&gt;&lt;span style=&quot;text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Courier New&amp;quot;;&quot;&gt;G&eacute;n&eacute;ralit&eacute;s sur les fonctions.&lt;/span&gt;&lt;br&gt;&lt;/span&gt;&lt;/span&gt;&lt;b style=&quot;color: rgb(115, 24, 66);&quot;&gt;&lt;span style=&quot;font-family: &quot; courier=&quot;&quot; new&quot;;&quot;=&quot;&quot;&gt;&lt;span style=&quot;font-family: &quot; circular=&quot;&quot; std=&quot;&quot; book&quot;;&quot;=&quot;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Courier New&amp;quot;;&quot; courier=&quot;&quot; new&quot;;&quot;=&quot;&quot;&gt;- Fonctions positives &amp;amp; fonctions&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style=&quot;font-family: &amp;quot;Courier New&amp;quot;;&quot; courier=&quot;&quot; new&quot;;&quot;=&quot;&quot;&gt; n&eacute;gatives .&amp;nbsp;&lt;/span&gt;&lt;/b&gt;&lt;/h3&gt;