Q. Explain the concept of demand function?

Identical to the demand theory which pivots around the concept of demand function, theory of production revolves around the concept of the production function. A production function can be an equation, graph or table presenting the maximum amount of a commodity which a firm can produce from a given set of inputs during a period of time.

The concept of production function represents the ways in that factors of production are combined by a firm to produce different levels of output. More particularly, it illustrates the maximum volume of physical output available from a given set of inputs or minimum set of inputs essential to produce any given level of output. Production function includes a technical or engineering relation, since the relation between inputs and outputs is a technical one. The production function is determined by a given state of technology. When technology enhances the production function changes, since the new production function can yield greater output from given inputs or smaller inputs will be sufficient to produce a given level of output. Further, production function incorporates the idea of efficiency. So production function isn't any relation between outputs andinputs, though a relation in that a given set of inputs produces a maximum output. Consequently production function comprises all the technically efficient methods of producing an output.