Chapter 2 Class 11 Relations and Functions (Term 1)

Serial order wise

Last updated at Jan. 28, 2020 by Teachoo

Misc 7 Let f, g: R β R be defined, respectively by f(x) = x + 1, g(x) = 2x β 3. Find f + g, f β g and π/π f(x) = x + 1, g(x) = 2x β 3 (f + g) (x) = f(x) + g(x) = (x + 1) + (2x β 3) = 3x β 2 β΄(f + g) (x) = 3x β 2 (f β g) (x) = f(x) β g(x) = (x + 1) β (2x β 3) = x + 1 β 2x + 3 = β x + 4 β΄ (f β g) (x) = βx + 4