经济金融学弹性理论

#经济金融学弹性理论

e_{d} = \frac{Δ Q}{Δ P} * \frac{P_{1} + P_{2}}{Q_{1} + Q_{2}} = - \frac{100}{2} * \frac{5 + 7}{100 + 200} = - 2

对于A 点

e_{d} = \frac{Δ Q}{Δ P} * \frac{P_{A}}{Q A} = - 50 * \frac{7}{100} = - 3.5

对于B 点

e_{d} = \frac{Δ Q}{Δ P} * \frac{P_{A}}{Q A} = - 50 * \frac{5}{200} = - 1.25