So for we learnt about indefinite integrals on elementary
algebraic, exponential, trigonometric and logarithmic functions. Now we are
going to study about the definite integrals.
Geometrically, definite integral ∫bc f (x)dx
represents the limit of a sum. It is also represented as the area bounded
the curve y =
f (x) , the axis of x, and the ordinates x = a
and x = b.