Which of the following relations are functions ? Give reasons . In cas – InterviewSolution

1.	Which of the following relations are functions ? Give reasons . In case of a functions find its domain and range . (i) ` f = {(-1,2) , (1,8) (2,11) , (3,14)}` (ii)` g = { (1,1) , (1,-1) , (4,2) , (9,3) , (16,4)}` (iii) `h={(a,b) , (b,c) , (c, d),(d,c)}`
Answer» Correct Answer - (i) f is a function dom (f) ={-1 ,1,2,3} and range (f ) ={2,8, 11, 14} (ii) g is not a function (iii) h is a function dom (h) ={a, b , c , d} and range (h) = { b, c } g is not a function since 1 has two image under g

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