In the name of ALLAH, the most beneficient, the most merciful

Discrete Mathematics (MTH202)

Question (select most suitable option)

  If a function (g o f)(x):X→Z is defined as (g o f)(x) = g(f(x)) for all x ∈ X. Then the function ________ is known as composition of f and g.
(f o g)
f-1(g(x))
(g o f)
g-1(f(x))