14-. Consider region R between the curve 3.! = and the xaxis, from x = 1 to x = 1. 1+:2 a. Sketch the area on a graph. b. Express the area as an integral, and nd the area. C. Using the substitution 1: = tan"1 1:, rewrite the integral in terms of u. d. Sketch the new function and area on a new graph. e. Evaluate the new integral and conclude that the areas are the same