Last updated at May 29, 2018 by Teachoo

Transcript

Misc 8 Let f = {(1, 1), (2, 3), (0, 1), ( 1, 3)} be a function from Z to Z defined by f(x) = ax + b, for some integers a, b. Determine a, b. We have to solve a + b = 1 2a + b = 3 To find a and b Calculating (2) (1) 2a + b (a + b) = 3 1 2a + b a b = 2 2a a + b b = 2 a + 0 = 2 a = 2 Putting a = 2 in (2) a + b = 1 2 + b = 1 b = 1 2 b = 1 Hence, a = 2 & b = 1

About the Author

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.