5. Expectation of future:
a. Future price: consumers’ current demand will increase if they expect higher future prices; their demand will
decrease if they expect lower future prices.
b. Future income: consumers’ current demand will increase if they expect higher future income; their demand
will decrease if they expect lower future income.
6. Effect of Advertisement: Effective advertisement is helpful in many ways, such as catching the attention of
consumers, informing them about products availability influencing them to purchase the product. Thus its effect
the demand of product.
7. Climate Conditions: Affect the demand to a greater extent. Example. The demand of ice – cream and cold
drinks will rise in summers.
8. Growth of Population: If the population will increase no. of consumer’s increases in the market, the
consumption capacity of customers would also increase. Thus it will affect the demand.
DEMAND FUNCTION
Demand function shows the relationship between quantity demanded for a particular commodity and the factors
influencing it.
The demand function relates price and quantity. It tells how many units of a good will be purchased at different
prices. In general, at higher prices, less will be purchased. Thus, the graphical representation of the demand
function (often referred to as the demand curve) has a negative slope. The market demand function is calculated
by adding up all of the individual consumers' demand functions.
It can be either with respect to one consumer (individual demand function) or to all the consumers in the market
(market demand function).
Individual Demand Function:
Individual demand function refers to the functional relationship between individual demand and the factors
affecting individual demand. It is expressed as:
Dx = f (Px, Pr, Y, T, F)
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.
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