【前面四節(jié)課筆記】

https://b23.tv/hZuEEsj

https://b23.tv/u2f0o2d

https://b23.tv/O0PKWXC

I. Production Function

Producer有?? Supply Curve

Goal: maximize profits （不是maximize output）

Profit=R-C q = f (L,K)

降低C（提高效率） q是市場上的

Input: labor capital

看是fixed還是variable

SR(short run僅一個變量 Labor-variable capital-fixed

還是LR(Long run Everything is variable

Fixed inputs--hard to exchange quickly

CAPITAL

Building Machines

Stuff that workers use to make things

II. Short-run Production

Labour-variable Capital-fixed

Production Function: q=f(L, k的bar)

Decision: how many, how long hours they work

Bottom line: amount of labor being provided

Factor: Marginal Product of Labor

q=L+K

Leantieff Production Function

eg. shoes

Slope Isoquants

Slope of the indifference curve of the marginal rate of substitution

MRTS：Marginal rate of technical substitution=slope of the Isoquant=Delta k over Delta L

Slope of Indifference curve varies along the Isoquant

??Production function??

1.A（one worker four machines）A到B

at A second worker is very productive (2machine

(diminishing marginal products)

not perfectly Leontieff, can get the intuition

second worker is same as the first (same off)

have same Isoquant

Marginal rate of technical substitution is -2??substitutes for two machines

one worker substitutes for two machines

B to C MRTS＝-1/2

Two workers substitute for one machine

等于0 因為都是Isoquant

MRTS為負數(shù)的原因????（圖和時間軸）

not freely Invertible

Leontieff

depend on where you are

can be negative infinity-∞ or positive infinity ∞+ or 0

if constant, that is a line(Substitutable inputs)MRS（marginal rate of substitution)constant linear

Return to scale（Baseline）

CRS: Constant Returns to scale production function

IRS: Increasing returns to scale where doubling inputs ??more than＞ double

DRS: ＜

后面繼續(xù)更新… 截止到

2021/12/25 21：30更新至P5 05：19

2022/02/22 22：52更新至P5 08：49

2022/02/23 18：06更新至P5 11：32