PARTE 5.1-Monopolio-versión7-Cetys-ITESM 2016-

PARTE 5.1-Monopolio-versión7-Cetys-ITESM 2016- - TEMA 5...

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TEMA 5. JOSE ROSARIO GONZALEZ MURILLO OCTUBRE 2016 Etructuras de mercado , (4.5 horas: 3 clases) 5.1 La competencia perfecta. 5.2 El monopolio 5,3 La competencia imperfecta: oligopolio y competencia monopolistica . .
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Relación entre ∆P, Iv y η p (Método algebraico) Caso ∆P Tipo de demanda Cambios en ∆I V Q [1- η p ] ∆P Efecto sobre el ingreso por venta 1 Elástica η p >1 p = 3) ∆I V (+)[1 - 3] (+) = (-) ∆I V (+)[ - ](+) = (-) I V disminuye 2 Elástica (η p = 3) ∆I V (+)[ - ](-) = (+) I V aumenta 3 Inelástica η p < 1 (η p =0.5) ∆I V (+)[1 – 0,5](+)=(+) ∆I V (+)[ + ](+) = (+) I V aumenta 4 Inelástica (η p = 0.5) ∆I V (+)[ + ](-) = (-) I V disminuye* 5 Elasticidad unitaria η p =1 ∆I V (+)[ 0 ](+) = 0 I V = 0 se mantiene 6 Elasticidad unitaria η p =1 ∆I V (+)[ 0] (-) = 0 I V = 0 se mantiene ** ∆Iv Q(1 - η P ) ∆P ¿Qué le pasa al ingreso por ventas al subir o bajar el precio si la demanda es elástica, inelástica o elásticamente unitaria? Según el modelo a nte un cambio ∆P el ingreso por ventas tendrá un cambio ∆Iv que depende de Q, ∆P , η P
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Demanda Lineal 8000 (Qo) 800 (Po) 4000 400 6000 2000 200 600 A B C D E F G H I 4ta semana de febrero Modelo de demanda lineal:
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Coeficiente de elasticidad en una demanda lineal Se conoce que: Según la gráfica: Sustituyendo (2) en (1): 8000 (Qo) 800 (Po) 4000 400 6000 2000 200 600 A B C D E F G H I 4ta semana de febrero En el ejemplo tenemos que: ( ) P P Q Q P   ( ) P P Qo Q Po 10( ) P P Q
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Coeficiente de elasticidad de una demanda lineal Situación P Q I V = Q x P η p = 10 (P/Q) Observación A 800 0 0 infinito Perfectamente elástica B 700 1000 700,000 7 Elástica C 600 2000 1,200,000 3 Elástica D 500 3000 1,500,000 1,6666 Elástica E 400 4000* 1,600,000 1 Elásticamente unitaria F 300 5000 1,500,000 0,6 Inelástica G 200 6000 1,200,000 0,333 Inelástica H 100 7000 700,000 1/7 Inelástica I 0 8000 0 0 Perfectamente inelástica Iv MAX η p = 1 η p < 1 η p > 1 800 8000 400 4000 P Q
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TEORIA DEL COSTE DE CORTO PLAZO COSTOS BASICOS: Cv, Cf y Ct q / SEM) C F , C V , C T , C F = 300 C V C T ZONA DE RENDIMIENTOS DECRECIENTES ZONA DE RENDIMIENTOS CRECIENTES FRONTERA 400 600 900 q max CUARTA SEMANA DE OCTUBRE
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Cambio de los costos en el tiempo LAS CURVAS FIJAS DE COSTE ASUMEN QUE LA TECNOLOGÍA Y LOS PRECIOS DE LOS FACTORES SE MANTIENE FIJOS. SIN EMBARGO, CUANDO EN EL MUNDO REAL TALES DETERMINATES DEL COSTO SE MODIFICAN, ENTONCES LAS CURVAS SE MODIFICAN DESPLAZÁNDOSE. UN AUMENTO DE PRECIO DE LOS INSUMOS PRODUCE UN
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