Last updated at May 29, 2018 by Teachoo

Transcript

Example 12 Let N be the set of natural numbers. Define a real valued function f : N N by f (x) = 2x + 1. Using this definition, complete the table given below. Given f(x) = 2x + 1 We have to find f(1) To find f(1), we put x = 1 f(1) = 2 1 + 1 = 2 + 1 = 3 To find f(2), we put x = 2 f(2) = 2 2 + 1 = 4 + 1 = 5 To find f(3), we put x = 3 f(3) = 2 3 + 1 = 6 + 1 = 7 To find f(4), we put x = 4 f(4) = 2 4 + 1 = 8 + 1 = 9 To find f(5), we put x = 5 f(5) = 2 5 + 1 = 10 + 1 = 11 To find f(6), we put x = 6 f(6) = 2 6 + 1 = 12 + 1 = 13 To find f(7), we put x = 7 f(7) = 2 7 + 1 = 14 + 1 = 15

Chapter 2 Class 11 Relations and Functions

Serial order wise

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.