👉 In mathematics, a demonstrator is a mathematical object that represents or acts as an example in a demonstration. This can be a simple number, symbol, or concept that is used to illustrate a specific idea or theorem. For instance, in algebra, a demonstrator might be a variable (like x) that represents a certain value or function. In geometry, a demonstrator could be the length of a line segment or the area of a polygon. In analysis, it could be a function or an