Answer:

The interval from 2 to 3 inclusive is the set of all real numbers between 2 and 3, including 2 and 3. It consists of the real numbers x such that 2 = x = 3.

More generally, the interval from a to b inclusive is the set of real numbers x such that a = x = b. When the end points are not included, the interval from a to b consists of the real numbers x such that a < x < b.