&lt;p&gt;&lt;div id=&quot;info&quot; class=&quot;style-scope ytd-video-primary-info-renderer&quot; style=&quot;margin: 0px; padding: 0px; border: 0px; background: rgb(249, 249, 249); display: flex; flex-direction: row; align-items: center; color: rgb(0, 0, 0); font-family: Roboto, Arial, sans-serif; font-size: 10px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;&quot;&gt;&lt;/div&gt;&lt;/p&gt;&lt;h1 class=&quot;title style-scope ytd-video-primary-info-renderer&quot; style=&quot;margin: 0px; padding: 0px; border: 0px; background: rgb(249, 249, 249); display: block; max-height: calc(2 * var(--yt-navbar-title-line-height, 2.4rem)); overflow: hidden; font-weight: 400; line-height: var(--yt-navbar-title-line-height, 2.4rem); color: var(--ytd-video-primary-info-renderer-title-color, var(--yt-spec-text-primary)); font-family: Roboto, Arial, sans-serif; font-size: var(--ytd-video-primary-info-renderer-title-font-size, var(--yt-navbar-title-font-size, inherit)); font-variant-ligatures: normal; font-variant-caps: normal; font-variant-numeric: ; font-variant-east-asian: ; transform: var(--ytd-video-primary-info-renderer-title-transform, none); text-shadow: var(--ytd-video-primary-info-renderer-title-text-shadow, none); font-style: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;&quot;&gt;&lt;yt-formatted-string force-default-style=&quot;&quot; class=&quot;style-scope ytd-video-primary-info-renderer&quot; style=&quot;word-break: break-word;&quot;&gt;Calculer la d&eacute;riv&eacute;e d'une fonction .&amp;nbsp;&lt;/yt-formatted-string&gt;&lt;/h1&gt;