Joel A. Bryan, Using Radioactive Decay to Investigate Exponential Functions, The Mathematics Teacher, Vol. 106, No. 1 (August 2012), pp. 52-58 ...

Straight-line graphs of logarithmic and exponential functions Watch this video to learn about straight line graphs of logarithmic and exponential functions.

As in [Entire slice regular functions, Springer, 2016] we define the ∗-exponential of a slice-regular function, which can be seen as a generalization of the complex exponential to quaternions.