In mathematics, a real number is a value that represents a quantity along a line. The adjective real in this context was introduced in the 17th century by Descartes, who distinguished between real and imaginary roots of polynomials.
In mathematics, a real number is a value that represents a quantity along a line. The adjective real in this context was introduced in the 17th century by Descartes, who distinguished between real and imaginary roots of polynomials.