Production Explains the U Shapes
Short-run cost curves are U-shaped because of what happens in production. At first, adding workers raises marginal product (increasing returns), so marginal cost falls; later, with a fixed amount of capital, each new worker adds less (diminishing marginal returns), so marginal cost rises. Average total cost falls while marginal cost is below it and rises […]
Marginal cost comes from changes in total or variable cost
Marginal cost comes from changes in total or variable cost: this Effortless Math guide explains the topic in plain language, shows how it works through solved examples, and gives you free practice to try immediately, so the idea sticks instead of staying abstract. Fixed cost cancels between adjacent output levels. MC=Δ TC/Δ Q=Δ VC/Δ Q. […]
