: this functions takes in a vector and spits out a value
In class, we've been using utility functions that have a constant absolute risk version coefficient. This function is:
And we have:
However, curvature is:
So, clearly this line does not have constant curvature by the geometric definition. This is also obvious when looking at a graph of . So, I'm struggling to relate the two measures. Is Arrow-Pratt discussing the relationship between slope and curvature?