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Example 11 - Chapter 2 Class 11 Relations and Functions
Last updated at Jan. 28, 2020 by Teachoo
Transcript
Example 11 Examine each of the following relations given below and state in each case, giving reasons whether it is a function or not? (i) R = {(2, 1), (3, 1), (4, 2)} The first elements are 2, 3 and 4 All these are not repeating. Hence, they have unique images. So, this relation is a function. In function, first element is not repeating Example 11 Examine each of the following relations given below and state in each case, giving reasons whether it is a function or not? (ii) R = {(2, 2), (2, 4), (3, 3), (4, 4)} The first elements are 2, 2, 3 and 4 Here 2 is coming twice, i.e. it is repeating Hence, this relation is not a function. In function, first element is not repeating Example 11 Examine each of the following relations given below and state in each case, giving reasons whether it is a function or not? (iii) R = {(1, 2), (2, 3), (3, 4), (4, 5), (5, 6), (6, 7)} The first elements are 1, 2, 3, 4, 5 and 6 . All these are not repeating. Hence, they have unique images. So, this relation is a function. In function, first element is not repeating
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Example 4 Important Not in Syllabus - CBSE Exams 2021
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Example 11 You are here
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Example 16 Not in Syllabus - CBSE Exams 2021
Example 17 Important Not in Syllabus - CBSE Exams 2021
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Chapter 2 Class 11 Relations and Functions
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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.