According to neoclassical growth theory, only technological progress can explain the long term rise

Neoclassical growth theory holds that economic growth is the result of a combination of factors such as labor, capital, and technological progress. Among them, technological progress plays a very important role in explaining the long-term rise in living standards.

Technological progress refers to the improvement of technology and efficiency in the production process, which can improve the speed and quality of economic growth by improving production efficiency, reducing production costs, and improving product quality, so as to improve people's living standards.

In addition, the neoclassical growth theory also puts forward the concept of "** law", that is, the optimal path of economic growth, which can avoid the excessive consumption of economic resources and the deterioration of environmental problems. According to the law, the rate of economic growth should match the speed of technological progress in order to maintain the sustainable development of the economy and the long-term rise of people's living standards.

Thus, according to the neoclassical theory of growth, technological progress is one of the important factors explaining the long-term rise in living standards, but it is not the only one. Other factors such as labor, capital, etc. can also have an impact on economic growth and the improvement of people's living standards.

The theories of the first and second questions are all correct. The third question is the business cycle.

It's all boom, recession, crisis, recovery, cyclical changes. There is a certain regularity, so it cannot be said to be fickle.

Economic growth is the process of increasing the material wealth of society, and it is the common essence of the dynamic process of general social reproduction. It represents an increase in a country's potential GDP or output. For a country, economic growth is an important indicator of a country's economic condition in the macroeconomy.

The neoclassical theory of economic growth introduces exogenous technological progress and population growth rates to account for sustained economic growth.

The steady-state conditions for the neoclassical growth model considering technological progress are:

sf(k)=(δ+n+g)k, where k is the effective per capita capital y=y an, where y is the gross output.

genus out, y is the effective per capita output, and a is the technology.

After taking the logarithm of the above equation, the total differential yields: δy y = δy y-δn n-δa a in the steady state, δy = 0, so the total output growth rate δy y = δn n + δa a = n + g

The basic implication of Solow's growth model is that the rate of change in capital ownership per capita k* depends on the difference between the per capita savings rate sf(k) and the amount of capital required to allocate nk per newly growing population according to the given capital-labor ratio.

Solow's growth model sf(k)=k*+nk also suggests another meaning. The per capita savings rate sf(k) in a society serves two purposes:

The second is to provide an average amount of capital equipment for each new population, which is called "the generalization of capital". In other words, when all the savings in the economy are converted into investments, part of it is used to increase the amount of capital owned per capita (capital deepening), and the other part is used to equip the new population with an average amount of capital (capital broadening).

As shown in the figure, the horizontal axis is capital ownership per capita k, and the vertical axis is per capita income f(k). The intensive production function curve f(k) shows that as per capita capital ownership increases, the per capita output, i.e., per capita income f(k), increases accordingly. The per capita savings curve sf(k) is below the per capita income curve f(k) because savings are only a part of income.

When the per capita capital ownership k of Qijian is OB, then the per capita income at this time is BJ, and the per capita savings are BP, and part of this per capita savings is used to equip the BG of capital broadening for each new population, and part of the GB, which is used for capital deepening, that is, the per capita capital ownership, that is, the GP of capital deepening. This means that k will increase, which will lead to an increase in f(k).

Therefore, point B will move right to point A. The deepening of capital at point A is equal to 0, and all per capita savings are used for the broadening of capital, and the economy reaches equilibrium. Vice versa.

According to the neoclassical growth model, the equilibrium point of economic growth is ()aThe real economic growth rate is equal to zero.

b.The growth rate of the human balance is equal to zero.

c.Capital deepening is equal to zero silver burial.

d.The accumulation of society as a whole is used precisely to equip the newly increased population.

Correct answer: cd

In the neoclassical growth model, the following statement is true.

a.Changes in the savings rate affect short-term economic growth rates;

b.Changes in the savings rate affect long-term economic growth rates;

c.Changes in the savings rate affect both the short-term and long-term economic growth rates.

d.The change in the growth rate of human distribution and filial piety does not affect the per capita capital level and per capita output level.

Correct Answer: a

a.Changes in the savings rate affect short-term economic growth rates;

b.Changes in the savings rate affect long-term economic growth rates;

c.Changes in the savings rate affect both short-term and long-term economic growth rates; God judges highly.

d.Changes in population growth do not affect the level of per capita capital and per capita output.

Correct answer: Changes in the savings rate affect the short-term economic growth rate;