Consider the production functions of three different Firms utilizing inputs labor (L) and  capital (K) in producing goods X, Y, and Z given below. The three firms face the same fixed  price for labor and capital at 5 per unit and 10 per unit, respectively.  X = KL2 – L3; Y = 10K1.5L0.5; Z = K0.5L0.5 a. Derive the short-run cost function of Firm Z if 25 units of capital are employed. Suppose  that good Z is sold at a perfectly competitive price of 10 per unit, calculate Firm Z’s  profit and discuss if the Firm Z should continue to operate. b. Derive the long-run cost function of Firm Y

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Chapter1: Making Economics Decisions
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Consider the production functions of three different Firms utilizing inputs labor (L) and  capital (K) in producing goods X, Y, and Z given below. The three firms face the same fixed  price for labor and capital at 5 per unit and 10 per unit, respectively. 

X = KL2 – L3; Y = 10K1.5L0.5; Z = K0.5L0.5

a. Derive the short-run cost function of Firm Z if 25 units of capital are employed. Suppose  that good Z is sold at a perfectly competitive price of 10 per unit, calculate Firm Z’s  profit and discuss if the Firm Z should continue to operate.

b. Derive the long-run cost function of Firm Y 


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