Marginal costs represent cost changes as production increases, with profit maximization at the point where marginal revenue equals marginal cost.
Marginal costs refer to the change in total cost as the quantity produced increases. In the context of a raspberry farm example, marginal costs initially decline, representing increasing marginal returns, but eventually start to rise due to diminishing marginal returns. The firm's profit-maximizing output occurs where marginal revenue equals marginal cost, highlighting the balance between revenue and cost.
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