(1) means that 1 is the final marginal cost MC, and 9999 is a part of the input fixed cost.
(2) This is a situation where the fixed investment is large, but once the investment is completed, the marginal cost is quite small. Because of the technical factors here, a "patent" is formed, there is a monopoly, and the seller monopolizes it! ! Its marginal cost curve MC has been declining, and there is no MC curve like that of ordinary manufacturers. Its shape is similar to the image of the function y= 1/x in the first quadrant, more convex to the origin than y= 1/x, and very close to the origin! ! . The closer to the vertical axis, the higher the marginal cost. The marginal revenue curve MR is inclined to the lower right, which is the same as that of ordinary manufacturers, and the slope is twice that of the demand curve. The demand elasticity of this kind of products is quite small, which leads to the almost vertical MR curve. Judging from the characteristics of the two curves, the equilibrium point of realizing the equilibrium condition of maximizing the profit of manufacturers (MR=MC) must be the intersection of MR and MC. .
Now let's discuss the intersection. Three cases-two intersections, no intersections and tangents. No intersection means that MC is always higher than MR, and experts will not produce "products"; Two intersections, one is higher and the other is lower. From the point of average cost, low can not make the average income ar >；; The average cost AC will not be used by experts for pricing, only the higher one will be selected for pricing; Looking at the tangent point, combined with the characteristics of MR curve almost vertical and MC image (MR almost vertical, MC extremely convex to the origin), if tangent, the equilibrium position of this tangent point will be high, which makes the final average grid very high. . . That is to say, the MC is not "1 USD" but higher when the equilibrium condition of profit maximization (MR=MC) is met. This is the theoretical analysis process of charging 10000 USD for maintenance.
If only I could draw, it would be more intuitive to have pictures on it. The landlord can draw a picture according to the characteristics of Mr. and MC I said, and combine the graphics to see the analysis.
This can also be analyzed from the perspective of demand elasticity. Demand elasticity is small, that is to say, no matter how high your price is, I still need to repair it when I need it, but I can't do it without it. In this case, the supplier's price increase is conducive to the improvement of "sales revenue", but it is hard to say to what extent, which is not as thorough as the above analysis of MR=MC.
Thesis problem
Triangle means that there are many low-income people and few high-income people; The rectangle indicates that the number of people with low, middle and high incomes is almost the same; Circular indicates that there are fewer people with low and high incomes, and more people with middle incomes. Comparatively speaking, the productivity of the triangle society is not high, and the number of low-income people accounts for the vast majority. At this time, raising income is the key, and we will talk about fairness when the income is high. The rectangular one, social distribution is unfair. The distribution of circles is better, but not the best.
The present situation of income distribution in China is a concave lens, which is similar to rectangular distribution, that is to say, the distribution is unfair. Adjusting income distribution means adjusting income distribution into an olive shape. . There are ready-made answers to such questions in general political economy textbooks. Just look them up and write more about the discussion questions, hehe. . The above material analysis is the big problem.
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