If the derivative of F (x) = (x-3) (X-6) (X-9) is not obtained, it shows that the derivative of equation f (x) is equal to zero and has several real roots

If the derivative of F (x) = (x-3) (X-6) (X-9) is not obtained, it shows that the derivative of equation f (x) is equal to zero and has several real roots

Two problems from Rolle's theorem