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Ex 2.3, 1 Which of the following relations are functions? Give reasons. If it is a function, determine its domain and range. {(2, 1), (5, 1), (8, 1), (11, 1), (14, 1), (17, 1)} A relation is a function if Every element of first set has an image Every element of first set has only one image Since both conditions are satisfied So, this relation is a function. Finding Domain and Range Domain = Set of first elements in the pair of the function = {"2, 5, 8, 11, 14, 17" } Range = Set of second elements in the pair of the function = {𝟏}

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.