Can multiplier effect achieve the theoretical effect in reality?

Can multiplier effect achieve the theoretical effect in reality?

Multiplier effect (multiplier effect) is a macro-economic influence, which is the influence degree of economic output ripple caused by the change of variables caused by the change of economic activities. In economics, multiplier effect is more complete, which means expenditure / income multiplier effect. It is a concept of macroeconomics and a means of macro-control

What is the mechanism of balanced budget multiplier

Balanced budget multiplier refers to the nature of government purchase and multiplier effect, which is a chain reaction to the stimulus effect of aggregate demand

Excuse me economist: why is multiplier a double-edged sword? What are the applicable conditions for multiplier to play its full role?
This is a question in macroeconomics. It's used in the examination. Try to be more standard in the answers. Refer to the fourth edition of macroeconomics by Gao Hongye

Reasons: on the one hand, when the investment increases, it will cause more income increase than the increased investment; on the other hand, when the investment decreases, it will also cause more income decrease than the reduced investment

What is the mathematical significance of Lagrange multiplier? What is the economic significance? Is it related to indifference curve?

For example, the extremum of F (x, y) under the condition of G (x, y) = 0 can be solved by the unconditional extremum of L = f (x, y) + TG (x, y), and t is the Lagrange multiplier. Then, we can understand this extremum in this way, assuming that the contour of G is a circle (draw a circle to represent the contour of G = 0), and the contour of F is a circle