Exam (elaborations)
Exercice corrigé - Principes de Microéconomie - Le monopole 2
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Cas pratique corrigé de Microéconomie - Licence 1, Niveau 1. Corrigé de sujet d'examen.
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Cas pratique – Principes de MicroéconomieLe monopole 2
La condition de maximisation du profit du monopoleur et de produire la quantité de bien qui
égalise la recette marginale (Rm) et le coût marginal (Cm) : Rm = Cm
Si Cm < Rm le monopoleur a intérêt à accroître son offre car chaque unité supplémentaire lui
rapporte plus qu’elle ne lui coûte. Inversement, il a intérêt à réduire son offre si Cm > Rm
L'égalité Cm = Rm donne la quantité optimale de production du monopoleur. Pour déduire le
prix auquel cette quantité est échangée on reporte la quantité optimale du monopoleur sur la
courbe de demande.
On en déduit ensuite le surplus des consommateurs (SC), le surplus des producteurs (SP) ainsi
que la perte sèche du monopole.
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