Local Maximum:A local maximum is a point on the graph where the function value is greater than or equal to the function values in the immediate vicinity, but it may not necessarily be the absolute highest point of the function.
Extrema:Extrema are the points on a graph where the function reaches either a maximum or a minimum value, including both global and local maxima and minima.
Concavity:Concavity refers to the curvature of a graph, and it can be used to identify the points where the function changes from increasing to decreasing (or vice versa), which may indicate the presence of a global maximum.