Diagram of Wright's coin curve

2.

The formula of long-term marginal cost is expressed as:

LMC = △ LTC / △ Q

or: LMC = DLTC / DQ

Mr = AP = P, which is the characteristic of perfect competition market, that is, the demand curve P (q) of perfect competition market coincides with marginal cost curve MR and average cost curve AP. Mr = LMC = SMC = lac = sac, which is the condition of perfect competitive market equilibrium

LMC, SMC, lac and sac were long-term marginal cost, short-term marginal cost, long-term average cost and short-term average cost respectively

Because lac is the envelope of sac, return to scale changes and remains unchanged in the long run. If the return to scale remains unchanged, lac = LMC, which is the lac straight line and the lowest point of sac Increasing or decreasing returns to scale: the lowest point of the intersection of LMC and lac with lac, which is the lowest point of SA corresponding to proction

extended data:

(1) each STC and LTC has only one common point. This is because for each STC, there is only one point tangent to the line from the origin. Or, it can be said that for each sac, there is only one point intersecting with SMC, and at this point sac drops to the lowest point

(2) STC can only be located above LTC, that is, except for common point, all other points on each STC are larger than LTC under the same proction state. Otherwise, if the STC falls below the LTC, it means that the short-term average cost sac is less than the long-term average cost lac, which is contradictory to the fact that lac is the lowest point of sac

(3) STC is tangent to LTC only when lac reaches the lowest point. This is because at every point on the LTC, it is the common point with an STC. At these common points, the corresponding STC is tangent to a straight line from the origin respectively,

however, for LTC, it is tangent to a straight line from the origin only when the lac drops to the lowest point. Therefore, except for the point on the LTC corresponding to the lowest lac, LTC and STC all intersect, and there is only one intersection

3. Here, according to the short-term definition, in the short term, only the input of proction factors can be adjusted and changed, and the scale cannot be expanded or reced. In other words, if the enterprise's cost curve is stc3 (large longitudinal intercept, large proction scale), the enterprise can not adjust the scale in the short term, that is to say, the enterprise's STC curve can not be changed. In this case, the output of the enterprise is Q2, so the cost is the value D of stc3 at Q2

4. Its curve, its connection, Dajiang has its principle, its connection, its slope is very close, we will all get better use.

5.

The formula of long-term marginal cost is expressed as:

LMC = △ LTC / △ Q

or: LMC = DLTC / DQ

Mr = AP = P, which is the characteristic of perfect competition market, that is, the demand curve P (q) of perfect competition market coincides with marginal cost curve MR and average cost curve AP. Mr = LMC = SMC = lac = sac, which is the condition of perfect competitive market equilibrium

LMC, SMC, lac and sac were long-term marginal cost, short-term marginal cost, long-term average cost and short-term average cost respectively

Because lac is the envelope of sac, return to scale changes and remains unchanged in the long run. If the return to scale remains unchanged, lac = LMC, which is the lac straight line and the lowest point of sac Increasing or decreasing returns to scale: the lowest point of the intersection of LMC and lac with lac, which is the lowest point of SA corresponding to proction

Extended data:

the change rule of short-term marginal cost is: at the beginning, the marginal cost decreases with the increase of proction, and when the proction increases to a certain extent, it increases with the increase of proction. The short-term marginal cost curve is a U-shaped curve that first decreases and then increases

the average fixed cost is the average fixed cost per unit proct, which is expressed by AFC: AFC = FC / Q. At first, the average fixed cost decreased by a large margin, and then decreased by a smaller and smaller margin. Therefore, the average fixed cost curve is steep at first, which indicates that when the output begins to increase, it decreases greatly, and then it becomes more and more flat, which indicates that with the increase of output, it decreases less and less

6. Short term total cost (STC) refers to the total cost of procing a certain proct in a short time. It is the sum of fixed cost and variable cost. The short-term total cost increases with the increase of output, which is an increasing function of output. Long term total cost LTC refers to the lowest total cost that a manufacturer can achieve by selecting the optimal proction scale at each proction level in the long term. The long-term total cost curve is the envelope of numerous short-term total cost curves. On this enveloping line, there are tangent points of LTC curve and STC curve at each continuously changing output level. The proction scale represented by STC curve is the optimal proction scale of the output, and the total cost corresponding to the tangent point is the lowest total cost of the output. Therefore, the LTC curve represents the minimum total proction cost brought by the optimal proction scale at each proction level in the long run.

7. If the curve of long-term total cost and the curve of long-term average reach an agreement, we will say that MTEC is correct. Otherwise, if it is not correct for the graph

8. Ability is the quality reflected in completing a goal or task. People show different abilities in completing activities. It refers to the necessary subjective conditions for the successful completion of an activity. Ability is a personality psychological characteristic that directly affects the efficiency of activities and makes activities complete smoothly.
ability is always associated with the completion of certain practice. Without concrete practice, we can neither express human ability nor develop human ability. The conditions and level to achieve a goal
ability: a measure of the level of natural exploration, cognition and transformation of living objects. Such as the ability of human to solve problems, the reproctive ability of animals and plants, etc<

Ability Classification:
1. General ability
refers to the basic ability that must be possessed in various activities. It ensures people to understand the world effectively, also known as intelligence. Intelligence includes all kinds of abilities that an indivial must possess in cognitive activities, such as perception (observation), memory, imagination, thinking ability, attention and so on. Among them, abstract thinking ability is the core, because abstract thinking ability dominates many factors of intelligence and controls the level of ability development<

2. Special ability
also known as special ability, is the necessary ability to successfully complete certain special activities, such as music ability, painting ability, mathematical ability, sports ability, etc. All kinds of special abilities have their own unique structure. For example, music ability is composed of four basic elements: music perception ability, music memory and imagination ability, music emotional ability, music action ability. The different combination of these elements constitutes the unique musical ability of different musicians
general ability and special ability are interrelated. On the one hand, the general ability may become an important part of the special ability when it is specially developed in a special activity field. For example, people's general hearing ability exists in both music ability and speech ability. Without the development of general hearing ability, it is impossible to develop the hearing ability of speech and music; On the other hand, with the development of special abilities, general abilities are also developed. Observation is a general ability, but in the painter's body, e to the special development of painting ability, the general observation of things is also enhanced accordingly. When people complete certain activities, they often need the joint participation of general ability and special ability. In a word, the development of general ability provides better internal conditions for the development of special ability, and the development of special ability will also actively promote the development of general ability<

3. Reengineering ability
refers to the ability to successfully master the knowledge and skills accumulated by predecessors in activities, and carry out activities according to the ready-made mode. This ability is concive to the requirements of learning activities. People's cognition, memory, operation and proficiency in learning activities mostly belong to the ability of reconstruction

4. Creativity
refers to the ability to create unique, novel and socially valuable procts in activities. It has the characteristics of uniqueness, flexibility and fluency
reengineering ability and creativity are interrelated. Reengineering ability is the foundation of creative ability, and no creative activity can be proced out of thin air. Therefore, in order to develop creativity, we should learn, imitate and recreate with an open mind. In practical activities, these two abilities permeate each other

5. Cognitive ability
refers to the ability of indivials to receive, process and use information, which is reflected in people's cognitive activities of the objective world. Metacognitive ability refers to an indivial's ability to recognize and control his own cognitive process, which is manifested as the cognition, experience and monitoring of the cognitive activities that are happening in his heart. The object of cognitive ability activity is cognitive information,

6. Metacognitive ability
the object of activity is cognitive activity itself, which includes how indivials evaluate their cognitive activities, how to choose the exact method to solve problems from the known possibilities, how to focus their attention, and how to decide to stop doing a difficult job in time, How to judge whether the goal is consistent with one's own ability

7. Super power, which means the same power and special function, refers to telepathy, perspective, foreknowledge, mental power and supernatural ability, is classified into the category of super psychology. Originated from the term of yin and Yang, the ancients believed that a person's abilities were like different rooms in a palace, and one of the doors would open when he needed to exert his abilities. It's very similar to Matteo Ricci's Memory Palace. The difference is that there are many other abilities besides memory. The ancients believed that people born at different times had different Yang Qi, and people's five elements would appear strange, so everyone could open the door of ability, so the ancients paid attention to the eight characters of birth. Some people have a lot of ability to open the door of vigorous Yang, so they seem to be gifted and intelligent. Some people who can only open the door of life and business have a good fortune. By using luoxiajing to make eight ice plum seals according to the eight characters of the birthday, they can improve their Yang. After the 18th century, with the progress of science, the mysterious role that science can't explain is called superstition, and ESP ability declined. In the United States, there is an ESP course specially used to train managers. This course is mainly used to cultivate the telepathic power of perspective, foresight and so on
ESP is the abbreviation of extra sensory perception in English, which means "super sensation". It is usually used as the general term of telepathy, perspective, touch and foresight. ESP ability is equal to "five senses of the right brain". Just as the left brain has five senses, so does the right brain. Some people think that only a few special people have the magical power. In fact, everyone has this ability. However, the ability of ESP is sealed up because the neocortex of human brain, which suppresses the potential consciousness, is too developed. On the contrary, the brain tissue of animals is almost composed of the old cortex, so it can play such a role.

9.

bus line: Line 11, the whole journey is about 6.6 km

1. Walk about 340 meters from Shenzhen Bao'an airport to the airport station

2. Take line 11, pass 2 stops and reach Fuyong station