Any quantity that grows or decays by a fixed per cent at regular intervals should possess either exponential growth or exponential decay. Exponential decay occurs when a population decreases at a consistent rate over time. The graph below shows the exponential decay function gx 1 2x g x 1 2 x.
Ok that is fine so we can describe the exponential decay.
Described as a function a quantity undergoing exponential growth is an exponential function of time that is the variable representing time is the exponent in contrast to other. Y a 1 -bx. In mathematics exponential decay describes the process of reducing an amount by a consistent percentage rate over a period of time. Displaystyle frac dN dt-lambda N.