Frank E. Harris, Tables of the Exponential Integral Ei (x), Mathematical Tables and Other Aids to Computation, Vol. 11, No. 57 (Jan., 1957), pp. 9-16 ...

A PHASE relation familiar to students of applied mathematics exists between a simple harmonic oscillation and its derivative. Similar relations exist between exponential functions and their ...

Based on these conjectures we describe a variety of multiplicative units, then propose three ways of understanding rate of change in relation to exponential functions. Finally we argue that rate is ...