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

Last updated at Jan. 27, 2020 by Teachoo

Transcript

Ex 1.5, 5 Draw appropriate Venn diagram for each of the following: (i) (A ∪ B)’ Step 1 Draw U, A & B Step 2 Mark A ∪ B Step 3 Mark (A ∪ B)’ i.e. all region except (A ∪ B) The orange region is (A ∪ B)’ Ex 1.5, 5 (Method 1) Draw appropriate Venn diagram for each of the following: (ii) A’ ∩ B’ We know that A’ ∩ B’ = (A ∪ B)’ The required region is the orange region Ex 1.5, 5 (Method 2) Draw appropriate Venn diagram for each of the following: (ii) A’ ∩ B’ Step 1 Draw U, A & U, B separately Step 2 Mark A’ & B’ separately A’ is the bluish portion. & B’ is the orangish portion. Step 3 Merge the two diagrams The shaded portion is A’ ∩ B’ Ex 1.5, 5 (Method 3) Draw appropriate Venn diagram for each of the following: (ii) A’ ∩ B’ Step 1: Draw U, A & B Step 2: Mark A’ Ex 1.5, 5 Draw appropriate Venn diagram for each of the following: (iii) (A ∩ B)’ Step 1: Draw U, A & B Step 1: Draw U, A & B Ex 1.5, 5 Draw appropriate Venn diagram for each of the following: (iv) A’ ∪ B’ We know that A’ ∪ B’ = (A ∩ B)’ The required region is the orange region

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

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

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.