if the demand function is given by D=15-4x-x2, find elasticity of demand w.r.t price when x=8

if the demand function is given by D=15-4x-x2, find elasticity of demand w.r.t price when x=8

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Caroline

1 thought on “if the demand function is given by D=15-4x-x2, find elasticity of demand w.r.t price when x=8”

  1. Step-by-step explanation:

    2x + y = 600  y = 600 – 2x

    3x – y = 400  y = 3x – 400

    At equilibrium, Demand = Supply

     600 – 2x = 3x – 400

    600 + 400 = 3x + 2x

    1,000 = 5x

    x =

    1000

    5

    x = 200

    Put x = 200 in y = 3x – 400,

    y = 3(200) – 400

    y = 600 – 400

    y = 200

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