Mathematics, Discrete Mathematics, Programming.
into f(x) and see if it is equal to y. If this is the case, our function is surjective. f(x) = x³, I change the f(x) to y (the same thing) just for clarity. So: y = x³ ³√y = x Now let’s define x as x =³√y f(³√y) = (³√y)³ The cubed root will be cancelled out and we are left with y. f(³√y) = y This