. . Amplitude and Period of a graph The amplitude is the maximum distance of the graph from the x -axis. Thus, the amplitude of a function is the height from the x -axis to its maximum or minimum.
The period is the distance required for the function to complete one full cycle. Inverse - - Remark (i) The graph of a periodic function consists of repetitions of the portion of the graph on an interval of length of its period. (ii) The graph of an odd function is symmetric with respect to the origin and the graph of an even function is symmetric about the y -axis.