# Demand Function In Economics

### Demand function :-

Demand function shows the relationship between quantity demanded for a particular commodity and the factors influencing it. It can be either with respect to one consumer (individual demand function) or to al the consumers in the market (market demand function).

#### Individual Demand function:-

Individual demand function refers to the functional relationship between individual demand and the factor affecting individual demand.

It is expressed as

Dx = f (Px, Pr, Y, T, F)

Where

Dx = Demand for commodity x

Px = Price of the given commodity x,

Pr = Prices of related Goods

y = Income of the consumer

T = Tastes and Preferences

F = Expectation of change in price in future.

### Market demand function :-

Market demand function refers to the functional relationship between market demand and the factors affecting market demand. Market demand function can be expressed as

Dx = Market demand of commodity x,

Px = Price of given commodity x,

Pr = Prices of related goods;

y = Income of the consumers;

T = Tastes and Preferences,

F = Expectation of change in price in future;

Po = Size and composition of population;

S = Season and weather;

D = Distribution of Income.