Not a function: “one to many“. In other words, let’s say you had one x-value that maps to many y-values. For example, — in coordinate notation — (2,1) and (2,10). If the first number (the x-value) repeats, then you do not have a function. To put that another way, ...
In many situations, it’s better to use Bernstein polynomials rather than anexplicit functionof the form y = f(x), because of the limitations offunction notation. These include the fact that a vertical line (i.e. avertical asymptote) x = c cannot be described using function notation. Form...
The weak point in all of this is that you're going to need to calibrate the LFXO against the HFXO as the RC oscillators absolutely will drift with temperature. Under the circumstances, you might want to provide an option on your board to feed an external cl...