6 Let be a function that is differentiable on the open

Last updated: 10/26/2023

6 Let be a function that is differentiable on the open interval 1 10 If f 2 5 f 5 5 and f 9 5 which of the following must be true I f has at least 2 zeros II The graph of f has at least one horizontal tangent III For some c 2 e 5 f c S A None B I only C I II only D I III only E I II III