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Diketahui: Buatlah fungsi permintaan [Qd = f (P)] dan fungsi penawaran [Qs = f (P)] dengan keempat cara yang saudara ketahui !

Diketahui:

  

Buatlah fungsi permintaan [Qd = f (P)] dan fungsi penawaran [Qs = f (P)] dengan keempat cara yang saudara ketahui ! space 

  1. ... space 

  2. ... space 

Jawaban:

Mencari Fungsi Permintaan

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell fraction numerator straight P space minus space straight P subscript 1 over denominator straight P subscript 2 space minus space straight P subscript 1 end fraction space equals space fraction numerator straight Q subscript straight d space minus space straight Q subscript straight d 1 end subscript over denominator straight Q subscript straight d 2 end subscript space minus space straight Q subscript straight d 1 end subscript end fraction fraction numerator straight P space minus space 0 over denominator 20 space minus space 0 end fraction space equals space fraction numerator straight Q subscript straight d space minus space 200 over denominator 160 space minus space 200 end fraction fraction numerator straight P space minus space 0 over denominator 20 end fraction space equals space fraction numerator straight Q subscript straight d space minus space 200 over denominator negative 40 end fraction minus 40 space left parenthesis straight P space minus space 0 right parenthesis space equals space 20 space left parenthesis straight Q subscript straight d space minus space 200 right parenthesis minus 40 straight P space equals space 20 straight Q subscript straight d space minus space 4.000 minus 40 straight P space plus space 4.000 space equals space 20 straight Q subscript straight d fraction numerator negative 40 straight P space plus space 4.000 over denominator 20 end fraction equals straight Q subscript straight d minus 2 straight P space plus space 200 space equals space straight Q subscript straight d end cell end table end style 

Mencari Fungsi Penawaran

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell fraction numerator straight P space minus space straight P subscript 1 over denominator straight P subscript 2 space minus space straight P subscript 1 end fraction space equals space fraction numerator straight Q subscript straight s space minus space straight Q subscript straight s 1 end subscript over denominator straight Q subscript straight s 2 end subscript space minus space straight Q subscript straight s 1 end subscript end fraction fraction numerator straight P space minus space 0 over denominator 20 space minus space 0 end fraction space equals space fraction numerator straight Q subscript straight s space minus space left parenthesis negative 40 right parenthesis over denominator 0 space minus space left parenthesis negative 40 right parenthesis end fraction fraction numerator straight P space minus space 0 over denominator 20 end fraction space equals space fraction numerator straight Q subscript straight s space plus 40 over denominator 40 end fraction 40 space left parenthesis straight P space minus space 0 right parenthesis space equals space 20 space left parenthesis straight Q subscript straight s space plus space 40 right parenthesis 40 straight P space equals space 20 straight Q subscript straight s space plus space 800 40 straight P space minus space 800 space equals space 20 straight Q subscript straight s fraction numerator 40 straight P space minus space 800 over denominator 20 end fraction equals straight Q subscript straight s 2 straight P space minus space 40 space equals space straight Q subscript straight s end cell end table end style space 

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