91 Inverse functions Informally, two functions f and g are inverses if each reverses, or undoes, the other More precisely Definition 911 Two functions f and g are inverses if for all x in the domain of g , f(g(x)) = x, and for all x in the domain of f, g(f(x)) = x Example 912 f = x3 and g = x1 / 3 are inverses, since (x3)1 / 3 = xPlease Subscribe here, thank you!!!For every function f, subset X of the domain and subset Y of the codomain, X ⊂ f −1 (f(X)) and f(f −1 (Y)) ⊂ Y If f is injective, then X = f −1 (f(X)), and if f is surjective, then f(f −1 (Y)) = Y For every function h X → Y, one can define a surjection H X → h(X) x → h(x) and an injection I h(X
Q 16 Classify The Following Functions F X Defined In Rrarrr As Injective Surjective Both O Youtube