Question

Tentukan fungsi g dalam bentuk pasangan terurut, jika diketahui:

f = (0,1) (1.-1) (2,0)
(f o g) = (0,0) (2,1) (4,2)

Answer 1

(fog)(x) = f(g(x))

(fog)(0) = f(g(0)) = 0
             = f(2) → g(0) = 2

(fog)(2) = f(g(2)) = 1
             = f(0) → g(2) = 0

(fog)(4) = f(g(4)) = 2  ← tidak didefinisikan

g = (0,2) (2,0)