Examlex
The expected return of a portfolio of two investments will be equal to the sum of the expected returns of the two investments plus twice the covariance between the investments.
U-Shaped Marginal Cost
A graphical representation of the cost incurred to produce one more unit of a good, which decreases at first due to increasing returns but eventually increases due to decreasing returns.
Profit-Maximizing Output
The quantity of output at which a firm achieves the maximum possible profit, determined where marginal revenue equals marginal cost.
Economic Profit
The difference between total revenue and total costs, including both explicit and implicit costs.
Perfectly Competitive Firm
A company that operates in a market where there are many buyers and sellers, no barriers to entry or exit, and the firm sells a homogeneous product.
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