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In this video, I suggest you review the entire course on intervals. The purpose of this sequence is to remind you and explain the most important elements of the chapter: 0:00 Intro 0:37 Interval concept and notation 9:56 Closed interval, open interval 12:29 Intersection and union of intervals ???? Official website: http://www.maths-et-tiques.fr Twitter: / mtiques Facebook: / mathsettiques Instagram: / yvanmonka