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Last updated at Jan. 27, 2020 by Teachoo

Transcript

Ex 1.5, 7 Fill in the blanks to make each of the following a true statement: (i) A ∪ A’ = … A ∪ A’ = U Ex 1.5, 7 Fill in the blanks to make each of the following a true statement: (ii) ∅′ ∩ A = … ∅′ = U – ∅, = U – {} = U So, ∅′ = U Now, ∅′ ∩ A = U ∩ A = A Ex 1.5, 7 Fill in the blanks to make each of the following a true statement: (iii) A ∩ A’ = … A ∩ A’ = ∅ Ex 1.5, 7 Fill in the blanks to make each of the following a true statement: (iv) U’ ∩ A = …… U’ = U – U = { } = ∅ So, U’ = ∅ U′ ∩ A = ∅ ∩ A = ∅

Complement of set

Complement of a set

De Morgan's Law

Example 21 Not in Syllabus - CBSE Exams 2021

Example 20 Not in Syllabus - CBSE Exams 2021

Ex 1.5, 2 Not in Syllabus - CBSE Exams 2021

Ex 1.5, 1 Important Not in Syllabus - CBSE Exams 2021

Ex 1.5, 3 Important Not in Syllabus - CBSE Exams 2021

Ex 1.5, 6 Not in Syllabus - CBSE Exams 2021

Example 22 Important Not in Syllabus - CBSE Exams 2021

Ex 1.5, 4 Important Not in Syllabus - CBSE Exams 2021

Ex 1.5, 7 Important Not in Syllabus - CBSE Exams 2021 You are here

Ex 1.5, 5 Important Not in Syllabus - CBSE Exams 2021

Chapter 1 Class 11 Sets

Concept wise

- Depiction and Definition
- Depicition of sets - Roster form
- Depicition of sets - Set builder form
- Intervals
- Null Set
- Finite/Infinite
- Equal sets
- Subset
- Power Set
- Universal Set
- Venn Diagram and Union of Set
- Intersection of Sets
- Difference of sets
- Complement of set
- Number of elements in set - 2 sets (Direct)
- Number of elements in set - 2 sets - (Using properties)
- Number of elements in set - 3 sets
- Proof - Using properties of sets
- Proof - where properties of sets cant be applied,using element

About the Author

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.