3  Area between Two Curves
Intuitively, true in the sense of Leibnitz, integration is the act of calculating the area by
cutting the region into a large number of small strips of elementary area and then
adding up these elementary areas Suppose we are given two curves represented by
y = f (x), y = g (x), where f (x) ≥ g(x) in [a, b] as shown in Fig 8 13 Here the points of
intersection of these two curves are given by x = a and x = b obtained by taking
common values of y from the given equation of two curves