
Note that x in the plot is dimensionless. If you want to use x as argument in a function which expects a particular dimension, then just multiply x by an appropriate unit.
In order to get the result in well defined units, divide the function by this unit. This procedure documents the units of both x and y in itself.
Martin Kraska
Pre-configured portable distribution of SMath Studio: https://en.smath.info/wiki/SMath%20with%20Plugins.ashx