Question

Using rolle's theorem find tangent line which is parallel to x-axis

Answer 1

Answer:Rolle's theoremHere function f is continuous on a closed interval [a, b] and differentiable on the open interval (a, b). If f (a) = f (b), then there is at least one point c in (a, b) where f '(c) = 0. 2. At point c the tangent is parallel to the x-axis.