The theory of monopoly is applicable to such firms, although they may face an additional and important constraint: a price increase may affect the behavior of rivals.
垄断理论对这类公司也适用，虽然他们会多一个重要的限制条件，即涨价可能影响其竞争者的行为。
2
Where a monopoly exists, the price of a product is likely to be higher than in a competitive market and the quantity sold less, generating monopoly profits for the seller.
当存在垄断时，产品的价格通常比竞争市场里的更高，卖出的量更少，产生垄断利润。
3
3 (Exercise) If both demand and supply have constant elasticity, compute the monopoly quantity and price.