84 a. Find the Jacobian of the transformation x = 4u, y = 2uv and sketch the region G: 4 ≤4u ≤ 8, 2≤2uv≤ 4, in the uv-plane. S S = ² 4 2 ›fff(x,y) R b. Then use x,y) dx dy= a. The Jacobian is fff(g( G f(g(u,v),h(u,v)) J(u,v) du dv to transform the integral dy dx into an integral over G, and evaluate both integrals. C...

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