郭同学2019-12-05 21:08:31

老师好，原版书P741-P742， 这两张截图我有些地方不明白。1 公式10,11 → 这两个公式，我没看懂 2 原版书 中说 ：“ If the output-to-capital ratio is above its equilibrium level (ψ), the second term in Equations 10 and 11 is positive and the growth rates of output per capita and the capital-to-labor ratio are above the steady state rate [θ/(1 – α)]. This corresponds to a situation in which actual saving/investment exceeds required investment and abovetrend growth in per capita output is driven by an above-trend rate of capital deepening. This situation usually reflects a relatively low capital-to-labor ratio but could, at least in principle, arise from high TFP. Because α < 1, capital is growing faster than output and the output-to-capital ratio is falling. Over time, the growth rates of both output per capita and the capital-to-labor ratio decline to the steady state rate. 这一整段，我不是非常明白，麻烦给解释一下。多谢！