Consider an economy whose production function is y(t) = K(t)ª, K(t) = sY(t) — SK(t) (Notice there is a dot above the K). Show that if there are increasing marginal returns, that is a>1, then there are two possible futures for the economy depending on whether the initial capital K(0) is greater or less than a threshold. Estimate the value of that threshold.

ENGR.ECONOMIC ANALYSIS
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ISBN:9780190931919
Author:NEWNAN
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Chapter1: Making Economics Decisions
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Consider an economy whose production function is Y(t) = K(t)a, K(t) = sY(t) - SK (t) (Notice
there is a dot above the K). Show that if there are increasing marginal returns, that is a>1, then
there are two possible futures for the economy depending on whether the initial capital K (0) is
greater or less than a threshold. Estimate the value of that threshold.
Transcribed Image Text:Consider an economy whose production function is Y(t) = K(t)a, K(t) = sY(t) - SK (t) (Notice there is a dot above the K). Show that if there are increasing marginal returns, that is a>1, then there are two possible futures for the economy depending on whether the initial capital K (0) is greater or less than a threshold. Estimate the value of that threshold.
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