Although not an assignment, for consideration: In human experience, there is perception of pain, and perception of sound. Which is exponential? Which is logarithmic? Name something else that is best described as exponential or logarithmic (as opposed to polynomial or trigonometric). Solution Perception of sound is probably logarithmic. In western classical music the semitone scale has logarithmic frequency. In a research it is shown that the primary and secondary somatosensory cortices activity and stimulus intensity resembles as an exponenetial function. The function matches closely with the pain rating of the paitent. Therefore it seems perception of pain is exponential in nature. Population growth, Compound Interest are exponential, where as the Logistic model is logarithmic...