LTC force curve

1. It mainly depends on speculation,

bitcoin and Leyte coin are virtual commodities,
the price can be manipulated by speculators,
there is no regularity.

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

4.

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

5. 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.

6. Each manufacturer's long-term cost line is the envelope of the corresponding short-term cost curve.

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. 1LMC=2Q²- 32Q+180，SMC=3Q²- 48Q + 195, let LMC = SMC, get q = 15 (1 rounded off), substitute LMC, get P = LMC = SMC = 150,
yield q = 15 substitute STC, get STC = 1350, TR = PQ = 150 × 15 = 2250, profit = tr-stc = 900
AVC = Q & # 178- 24q + 195, let davc / DQ = 2q-24 = 0, get q = 12, substitute into AVC, get short-term lowest price P = 51
(2) let LMC = 2q & # 178- 32q + 180 = 124, the long-term yield q = 14 (2 rounding)
make SMC = 3Q & # 178- 48Q + 195 = 124, short-term yield q = 14.35 (1.6 rounding off)
(3) lac = (2 / 3) Q & # 178- 16q + 180, let DLAC / DQ = (4 / 3) q-16 = 0, get q = 12, substitute into lac, get long-term equilibrium price P = lac = 84
let LMC = 2q & # 178- 32q + 180 = 84, the long-term equilibrium yield q = 12 (4 rounding off).

9. Solution: from LTC = 0.0025q3-0.5q2 + 384q,
LMC = 0.0075q2-q + 384
lac = 0.0025q2-0.5q + 384
from P = a-0.1q,
from P = a-0.1q,
from long-term equilibrium, on the one hand, LMC = Mr, on the other hand, lac = P, then there is
0.0075q2-q + 384 = a-0.2q
0.0025q2-0.5q + 384 = a-0.1q
from solving equations, we can get q = 80, P = 360, a = 36