What is the difference between perfectly elastic demand and perfectly inelastic demand?

Aliyuus2

8 months ago

Perfectly elastic demand means quantity demanded is infinitely sensitive to a tiny price change, so any price increase causes demand to drop to zero, while perfectly inelastic demand means quantity demanded does not change at all regardless of price fluctuations. The key difference lies in the price's effect on quantity: infinite sensitivity for perfectly elastic versus no sensitivity for perfectly inelastic demand. Perfectly elastic demand Definition: A slight change in price leads to an infinite change in quantity demanded.Elasticity value: \(E_{d}=\infty \).Consumer behavior: Consumers will not tolerate any price increase. If the price goes up even slightly, they will buy none of the product.Real-world applicability: A theoretical concept, often used to model perfectly competitive markets where a single firm cannot influence the market price. Perfectly inelastic demand Definition: The quantity demanded is completely unresponsive to any change in price.Elasticity value: \(E_{d}=0\).Consumer behavior: Consumers will purchase the same quantity of the good no matter what the price is.Real-world applicability: A theoretical concept. However, some goods like life-saving drugs (e.g., insulin) have very low elasticity, meaning their demand changes very little with price, which is close to the concept of perfectly inelastic demand.