NCERT 2022 | संबंध एवं फलन - L16 | relation and function | Class 12 गणित | Jitendra Sir | 11 AM |

Class 12 Maths | Chapter 1 | संबंध एवं फलन | Important Questions | Quick Revision

Which of the following relations are functions? Give reasons. If it is a function, determine its domain and range. (i) {(2,1),(5,1),(8,1),(11,1),(14,1),(17,1)} (ii) {(2,1),(4,2),(6,3),(8,4),(10,5),(12,6),(14,7)} (iii) {(1,3),(1,5),(2,5)}

Which of the following relations are functions? Give reasons. If it is a function, determine its domain and range: (i) {(2,1), (3,1),(4,2)} (ii) {(2,2),(2,4),(3,3),(4,4)} (iii) {(2,1),(5,1),(8,1),(11,2),(14,2),(17,2)} (iv) {(1,2),(2,3),(3,4),(4,5),(5,6),(6,7)} (v){(2,1),(4,2),(6,3),(8,4),(10,5)} (vi) {(1,2),(2,3),(3,4),(3,5),(3,7),(4,8)}

Class 12 Maths Chapter 1 Relations And Functions Important Questions | CBSE Board Quick Revision

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)}

Which of the following relations are functions? Give reasons. In case of a function, find its domain and range. (i) f={(1 ,3),(1,5),(2,3),(2,5)} (ii) g={(2,1),(5,1),(8,1),(11,1)} (iii) h={(2,1),(4,2),(6,3),(8,4),(10,5),(12,6)}

The distance (in km) of 40 engineers from their residence to their place of work were found as follows: 5 3 10 20 25 11 13 7 12 31 19 10 12 17 18 11 32 17 16 2 7 9 7 8 3 5 12 15 18 3 12 14 2 9 6 15 15 7 6 12 Construct a grouped frequency distribution table with class size 5 for the data given above taking the first interval as 0-5 (5 not included). What main features do you observe from this tabular representation?

If A={1,2,3,4},B={1,5,9,11,15,16} and f={(1,5),(2,9),(3,1),(4,5),(2,11)} are the following statements true ? (i) f is a relation from A to B . (ii) f is a function from A to B Justify your answer.

Let A = {1, 2, 3, 4}, B = {1, 5, 9, 11 , 15 , 16} and f = {(1, 5), (2, 9), (3, 1), (4, 5), (2, 11)} . Are the following true?(i) f is a relation from A to B(ii) f is a function from A to B.Justify y

Let the marks obtained by 30 students of a class in a test be 38, 26, 4, 32, 20, 22, 11, 47, 12, 23, 8, 2, 10, 8, 12, 17, 2, 19, 16, 42, 40, 13, 47, 38, 17, 27, 30, 6, 23, 18. Arrange the data in grouped frequency distribution, using groups 0-10, 10-20 e tc.