Economics 2150A/B Lecture Notes - Lecture 7: Isocost, Tangent, Isoquant
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ECON 2150A/B Full Course Notes
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In a firm there are 2 homogenous inputs; labour and capital. Each firm has a desired output and a desired total cost allocated. Isocost line is a set of combinations of labour and capital that will result in the same total cost of the firm. Iocost line like a budget line is a straight downward sloping line with a slope listed above and y intercept tc/r and x intercept tc/w. Interior solution allows you to derive the interior optimum which is the optimal input basket at a point where the isocost line is just tangent to the isoquant line. It is the rate at which a producer would be willing to echange k for l and keep the same desired cost in the market place. For a cob douglas bundle, mrts is ak/bl. A consumer can keep the same costs from bundle a if he traded in one unit of k for 1 or more units of l.