the evaluation of the indefinite integral between two limits, representing the area between the given function and the x- axis between these two values of x

the expression for that function, ∫baf(x)dx, where f (x) is the given function and x = a and x =b are the limits of integration. Where F(x) = ∫f(x)dx, the indefinite integral, ∫baf(x)dx = F(b)–F(a)