(7, 7 ) (1.5, 5) - 47 142 44 4 41 43 Y (1.5, 1.5) (4, 3.5) X FIGURE PB. 1 8.2. Using a 2 X 2 rule, evaluate the integral ([ cy + y) dady by Gaussian quadrature, where A denotes the region shown in Fig. P8.1