Find the indicated derivative and simplify. 
for 
Definitions:
Product Differentiation
The process of distinguishing a product or service from others, to make it more attractive to a particular target market.
Monopolistically Competitive
A market structure characterized by many sellers offering differentiated products, allowing for some degree of market power.
Costs and Benefits
Refers to the analysis or evaluation of the negative and positive effects or outcomes of a decision, action, or policy.
Monopolistic Competition
A market structure characterized by many producers selling products that are similar but not identical, allowing for competition.
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