Microeconomics I

Fiches de réveisions

Fiches de réveisions


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Sprache English
Kategorie VWL
Stufe Universität
Erstellt / Aktualisiert 28.05.2019 / 02.03.2025
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Budget constraint for present and future consumption

Future value

Comparative statics of intertemporal choice

Equivalent and compensating variations' definitions

Compensating variation graph

Equivalent variation graph

Equivalence of CV and EV in quasi-linear preferences

The extensive and intensive margin

Elasticity's formula

Elasticity of a linear demand curve

Elasticity and total revenue

Elasticity and total revenue graph

Constant elasticity demand

Elasticity and marginal revenue

Income elasticity

Cross price elasticity

Maximise profit subject to output constraint/technology

Examples of technology

Marginal product of factor

Diminishing marginal product

Check if diminishing marginal product

Derive twice the production function

Difference between marginal product and return to scale

Marginal products describe the change in output level as a single input level changes
Returns-to-scale describes how the output level changes as all input levels change in direct proportion (e.g. all input levels doubled, or halved)

Examples of return to scale: fixed proportions and perfect substitutes

Examples of return to scale: Cobb-Douglas

(marginal) Technical Rate of Substitution (TRS)

Diminishing Technical Rate of Substitution

A well-behaved technology is

I convex: if the input bundles x' and x'' both provide y units of output then the mixture tx' + (1-t)x'' provides at least y units of output, for any 0 < t < 1
I monotonic: more of any input generates more output

Long run VS short run

Short run: At least one factor of production is fixed
Long run: All factors of production are variable

Economic profit

Present value's formula

Example of a quasi-fixed factor

electricity only if producing

Fixed factor

Paying even if no production

Short-run profit maximization

Isoprofit line

Construct from profit maximization