Common such as:

F(x) = 8, then f' (x) = 0.

F(x) = ax then f' (x) = a.

F (x) = ax n Then f' (x) = a * n * x (n- 1).

F(x) = sinx means f' (x) = cosx.

F (x) = x a means f' (x) = x a * lna, etc.