a

Consider the integral f(x, y)drdy. If we change the order of integration we obtain the sum of two integrals: f(x, y) dydr + 91 (I) f(z, y) dydr a 0 b V2 91 (I) 0 92 ( I) .X 2 + 4 C d 93 (I) gA() =Consider the integral f* f(x, y) dydx. Sketch the region of integration and change the order of integration. f(z, y)drdy gi(y) a = b g1(y) 92 (y)