中級宏觀經(jīng)濟學上海財經(jīng)大學經(jīng)濟學院沈凌03growth-資料下載頁
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【正文】 ? Real saving = investment Macroeconomics Chapter 3 36 Solow Growth Model ??K = I?δK ? Change in capital stock = gross investment ? depreciation, or Change in capital stock = investment ? ?K = s(Y?δK) Change in capital stock = real saving Macroeconomics Chapter 3 37 Solow Growth Model ? Divide both sides by K ? ?K/K = sY/K ? sδ Macroeconomics Chapter 3 38 Solow Growth Model ??k/k = ?K/K ? ?L/L ??k/k = s (Y/K) ? sδ ? n Macroeconomics Chapter 3 39 Solow Growth Model ? Y/K =(Y/L) / (K/L) ? Y/K = y/k Macroeconomics Chapter 3 40 Solow Growth Model ? ?k/k = s(y/k) ? sδ ? n ??y/y = α(?k/k) ? ?y/y = α[ s(y/k) ? sδ ? n] Macroeconomics Chapter 3 41 Solow Growth Model Macroeconomics Chapter 3 42 Solow Growth Model Macroeconomics Chapter 3 43 Solow Growth Model ? steady state. ? When k = k?, ?k/k equals zero. ? ?k/k = 0, k stays fixed at the value k?. ? y* = f(k*) Macroeconomics Chapter 3 44 Solow Growth Model Macroeconomics Chapter 3 45 Solow Growth Model ? In the steady state, ?k/k equals zero. s(y*/k*) ? sδ ? n= 0 s(y* ?δ k*) = nk* ? Steadystate saving per worker = steadystate capital provided for each new worker ? 作業(yè)一
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