Inequalities L-11 | Wavy Curve Method (Part C) | By Naman Agarwal | JEE Mains and Advanced | CBSE

The folloiwng figure shows the graph of a continuous function y = f(x) on the interval [1, 3]. The points A, B, C have coordinates (1,1), (3,2),(2,3), respectively , and the lines L_(1) and L_(2) are parrallel, with L_(1) being tangent to the curve at C. If the area under the graph of y = f(x) from x = 1 to x = 3 is 4 square units, then the area of the shaded region is