You could also use to “many to one” rule:Is a function:“many to one“. This is saying if you have multiple x-values that map to one y-value — say, (2,9), (3,9) and (6,9) — then that still qualifies as a function. Put more simply, it’s okay for a function to ha...
equation and therefore how they are calculated from the fitting parametersaandbin Excel. This only applies to the Excel version of the USL, where an inversion transformation is necessary because Excel cannot fit a rational function by default. Tools like R and Mathematica do not have this ...