Most importantly exponential decay is not linear and the decrease is rapid at first but not constant. Where exponential growth goes up exponential growth goes down. A quantity is subject to exponential decay if it decreases at a rate proportional to its current value.
An exponential function arĖ£ is growing increasing if r1 and decaying decreasing if 0.
Large f x A e -kx f x Aekx. Algebraically speaking an exponential decay expression is any expression of the form. Exponential decay is a decrease in a quantity that follows the mathematical relationship. D N d t l N.