# Consumer Demand – Demand Curve, Demand Function & Law Of Demand

Consumer Demand – Demand Curve, Demand Function & Law of Demand What is Demand? Demand for a commodity refers to the quantity of the commodity that people are willing to purchase at a specific price per unit of time, other factors (such as price of related goods, income, tastes and preferences, advertising, etc) being constant. Demand includes the desire to buy the commodity accompanied by the willingness to buy it and sufficient purchasing power to purchase it. For instance-Everyone might have willingness to buy “Mercedes-S class” but only a few have the ability to pay for it. Thus, everyone cannot be said to have a demand for the car “Mercedes-s Class”. Demand may arise from individuals, household and market. When goods are demanded by individuals (for instance-clothes, shoes), it is called as individual demand. Goods demanded by household constitute household demand (for instance-demand for house, washing machine). Demand for a commodity by all individuals/households in the market in total constitute market demand. Demand Function Demand function is a mathematical function showing relationship between the quantity demanded of a commodity and the factors influencing demand. Dx = f (Px, Py, T, Y, A, Pp, Ep, U) In the above equation, Dx = Quantity demanded of a commodity Px = Price of the commodity Py = Price of related goods T = Tastes and preferences of consumer Y = Income level A = Advertising and promotional activities Pp = Population (Size of the market) Ep = Consumer’s expectations about future prices U = Specific factors affecting demand for a commodity such as seasonal changes, taxation policy, availability of credit facilities, etc. Law of Demand The law of demand states that there is an inverse relationship between quantity demanded of a commodity and it’s price, other factors being constant. In other words, higher…

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