chart: how much extra att you need to be equal to 1 extra %stat

Yeah I wasn't consistent in my definitions in that post, so it's easy to see why it could be misinterpreted.

change in range per change in X = partial derivative of range equation suggests the partial is just A

Set the partials equal to each other and solve for dX when dY = 1 to obtain the change in X that is equivalent to a 1 unit change in Y. suggests partial is not A but is A*dx

Sorry for the poor wording there lol