Question:Show that, if g : Y → X and h : Y → X are both...
Question
Show that, if g : Y → X and h : Y → X are both...
Show that, if g : Y → X and h : Y → X are both inverses to f,
then g = h (two functions are equal if their domains are the same,
D(g) = D(h) = D and g(y) = h(y) ∀y ∈ D).