Completar frases Fermats TheroemVersión en línea session 18 por Mia Stampatori 1 Fermat's Theorem If f is a function for which : f ( x ) is at x = c ; f' ( c ) exists ( i . e . f is at c ) . f ( x ) has a min or max at the point ( c , f ( c ) ) ; Then it must be that f' ( c ) = 0 . In other words , f has a at x = .