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Curated by: Khan Academy India - English (13 videos)
This video talks about brackets (both open and closed) as a way to describe intervals as subsets of R. We also look at a few practice problems where we apply the knowledge of inequalities to describe different types of intervals. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! (https://www.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:sets-ncert-new/xea4762213f311c5e:untitled-1198/e/intervals-as-subsets-of-r) Timestamps: 00:00 How to include infinite numbers? 01:16 Intervals closed on both ends 02:39 Intervals open on both ends 04:00 Intervals that are both open and closed 04:30 Inequalities used to represent intervals 05:39 Practice problems involving intervals Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Ashish Gupta