Perfectly Elastic and Imperfectly Inelastic Demand

In this article we will discuss about the perfectly elastic and imperfectly inelastic demand for a good, explained with the help of diagrams. If, in spite of a change in the price (p) of a good, its quantity demanded (q) does not change at all, then it is said that the demand for the good is perfectly inelastic w.r.t. price. [...]