2nd October 2019

mathsisfun
18

What is the amplitude of a function?

Amplitude, Period, Phase Shift and Frequency. Some functions (like Sine and Cosine) repeat forever. and are called Periodic Functions. The Period goes from one peak to the next (or from any point to the next matching point): The Amplitude is the height from the center line to the peak (or to the trough).

Correspondingly, is the amplitude always positive?

Amplitude. Amplitudes are always positive numbers (for example: 3.5, 1, 120) and are never negative (for example: -3.5, -1, -120). Amplitudes are positive because distance can only be greater than zero or equal to zero; negative distance does not exist.

What is the amplitude of a sine wave?

This function has an amplitude of 1 because the graph goes one unit up and one unit down from the midline of the graph. This function has a period of because the sine wave repeats every units.

What is amplitude how is it measured?

The amplitude of a wave refers to the maximum amount of displacement of a particle on the medium from its rest position. In a sense, the amplitude is the distance from rest to crest. Similarly, the amplitude can be measured from the rest position to the trough position.
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