Agung Nusantara
Respons relatif jumlah barang X yang diminta terhadap perubahan harga barang X = ( Qx/Qx) : ( Px/Px)
Qx Px = (Qx b – Qx a )/2 (Px b – Px a )/2 P/t Q/t A B Pa Pb QaQb
P/t Q/t A Pa Qa Qx/Qx = Px/Px
ClassificationResponsivenessCoefficient Elastic% Q > % P > 1 Inelastic% Q < % P < 1 Unitary% Q = % P = 1 Special Cases: a. Completely Inelastic b. Infinitely Elastic % Q = 0 % P = 0 = 0 = infinite
1.Number of substitute goods 2.The greater proportion of spending on an item to consumers total income 3.Consumer expectations 4.The longer the time period allowed consumers to adjust their spending habits
CoefficientClassificationEffect on Total Revenue > 1Elastic P naik sedikit berdampak penurunan Q lebih besar < 1InelasticP naik besar berdampak penurunan Q sedikit = 1UnitaryPeningkatan P seimbang dengan penurunan Q