Example 11 - Chapter 2 Class 11 Relations and Functions
Last updated at May 29, 2018 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(one) images. So, this relation is a function. 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 element are 2, 2, 3 and 2 Here 2 is coming twice, i.e. it is repeating Hence, this relation is not a function. 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(one) images. So, this relation is a function.
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Example 4 Important
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Example 8 Important
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Example 10 Important
Example 11 You are here
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Example 14 Important
Example 15 Important
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Example 17 Important
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Example 19 Important
Example 20 Important
Example 21 Important
Example 22 Important
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.