The

**integral**sign ∫ represents integration. The**symbol**dx, called the differential of the variable x, indicates that the variable of integration is x. The function f(x) to be integrated is called the integrand. The**symbol**dx is separated from the integrand by a space (as shown).Simply so, what is an integral symbol?

That is, it's usually called the "

**integral symbol**". For its origins: "∫**symbol**is used to denote the**integral**in mathematics. The notation was introduced by the German mathematician Gottfried Wilhelm Leibniz towards the end of the 17th century.What is integral line?

In mathematics, a

**line integral**is an**integral**where the function to be**integrated**is evaluated along a curve. The terms path**integral**, curve**integral**, and curvilinear**integral**are also used; contour**integral**as well, although that is typically reserved for**line integrals**in the complex plane.What is an integral in calculus?

An

**integral**is a mathematical object that can be interpreted as an area or a generalization of area. Integrals, together with derivatives, are the fundamental objects of**calculus**. The Riemann**integral**is the simplest**integral**definition and the only one usually encountered in physics and elementary**calculus**.