Markets

Explore how changes in income, substitute prices, input costs, technology, and other factors shift demand and supply curves, and trace the effect on equilibrium price and quantity.

Set the parameters of linear inverse demand P = a − bQ and supply P = c + dQ. See the equilibrium, and the consumer and producer surplus triangles, update in real time.

Impose a price ceiling or floor and set the control price with a slider. See whether it binds, how much excess demand or excess supply it creates, and how consumer surplus, producer surplus, and deadweight loss shift relative to the free-market equilibrium.

Apply a per-unit tax and see why the statutory side doesn't matter: identical prices and quantity whichever curve shifts. Watch the consumer/producer burden split track the slopes, alongside revenue and deadweight loss.

Open a closed economy to the world market: set the world price above or below the autarky price to make the country an exporter or importer, then impose an export tax or import tariff and watch surplus, trade volume, government revenue, and deadweight loss respond.

Choose perfect substitutes or perfect complements, set the preference parameter k along with prices and income, and watch the optimal bundle settle at a corner, spread along the whole budget line at the knife-edge price ratio, or sit at the kink of an L-shaped indifference curve.