i. Total Cost
ii. Stock
iii. Output
iv. Elasticity of Supply
v. Marginal Cost
vi. Average Revenue
TC = TFC + TVC
ii. Stock is defined as the amount of goods that are available with the seller for sale in the market at a given point of time. It includes previous stock and current stock. Stock forms the source of supply for the firm. In other words, goods for supply is taken from stock
iii. Output refers to the total quantity of a good being produced in an economy at a given point of time. In other words, it is defined as the sum total of goods produced by all the firms with all the units of inputs - both variable and fixed factors. Algebraically, it is defined as the summation of all the goods and services produced in an economy.
iv. Elasticity of supply, or price elasticity of supply, measures the responsiveness of quantity supplied of a commodity to the change in its price. It can be calculated as:
Es = Percentage Change in Quantity Supplied / Percentage Change in Price
v. Marginal cost is defined as the addition to total cost as a result of producing one more unit of output. It can be calculated by the following formula.
MC = Change in total cost / Change in quantity of output
vi. Average revenue is the revenue earned per unit of output sold. It is equal to the total revenue divided by the total number of units sold. Algebraically:
AR = Total Revenue / Total Quantity of Output Sold