1. Chapter 1 Class 11 Sets
  2. Concept wise
  3. Complement of set

De Morgan's Law

Last updated at July 11, 2018 by

Learn about Sets on our Youtube Channel - https://you.tube/Chapter-1-Class-11-Sets

De Morgan’s Law are based on complement of sets

  1. (A ∪ B)´ = A′ ∩ B′
  2. (A ∩ B)′ = A′ ∪ B′

 

Let us prove the law by Venn Diagrams

Let's take two sets A and B like

2 sets to prove demorgans law.jpg

Proving (A ∪ B)´ = A′ ∩ B′

De Morgans Law - Proving union of complement is equal to intersection of complements.jpg

Proving (A ∩ B)′= A′ ∪ B′

De Morgans Law - Proving intersection of complement is equal to union of complements.jpg

  1. Chapter 1 Class 11 Sets
  2. Concept wise

    3. Complement of set

    Number of elements in set - 2 sets (Direct) →
Chapter 1 Class 11 Sets
Concept wise

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.