General Differentiated Goods Bertrand Model |n the Hoteling model you have to derive the demand curve for each good Because goods are strategic substitutes, we derive a demand curve where, qi(pi, pi) = A Bpi + Cp; j.e., your demand increases if your opponent raises his price (Why?) Extra Credit- Questar - Fobo. (3, 4 Differentiated substitutes can arise for more reasons than distance (What are a few?) Be able to find a differentiated Bertrand equilibrium when | give you the firms demand curves directly. This is easier than solving the Hoteling model, since you don't have to derive demand