What to explore
Change parameters and watch the model adjust.
- Output price, wage, rental rate, fixed cost, and productivity
- Technology curvature and output range for cost-curve comparisons
Advanced microeconomics
Competitive Firm and Cost Curves
A firm-theory notebook connecting production choices, cost curves, shutdown logic, and the firm's short-run supply behavior.
Focus
Marginal cost, shutdown condition, and firm supply
Move productivity, fixed costs, and output prices to see how marginal cost, average cost, and profit-maximizing output respond.Core ideas
Interpret the mechanics before you chase the graphs.
- The profit-maximizing competitive firm sets price equal to marginal cost when operating.
- Average variable cost matters for the shutdown decision, while average total cost matters for economic profit.
- Cost curves translate production technology into supply behavior.
Learning goals
What this model should help students internalize.
- Relate the production function to short-run cost curves and profit maximization.
- Use the shutdown condition to determine when the firm supplies positive output.
- Interpret the firm's supply curve as the upward-sloping part of marginal cost above average variable cost.
Prerequisites
Concepts to review before diving in.
- Consumer-choice and optimization intuition
- Basic familiarity with total, average, and marginal cost
Next models to study
Keep moving through the track.
Advanced microeconomics
2x2 Normal-Form Game
Change payoffs to see how best-response maps, equilibrium outcomes, and strategic tension shift across familiar 2x2 games.
Upper-undergraduate econometrics
Simple OLS Regression
Adjust the data-generating process and watch the fitted line, coefficient estimates, and residual behavior move with noise, slope, and sample size.