Let D be the region enclosed by the ellipse 4 y? 1 9. above the x-axis. 1. Calculate the Jacobian using the change of variables 2u, and y = 3v. X = a(x, y) J(u, v) = a(u, v) 2. Rewrite the integral using the change of variables: y dA = = || f(u, v) du dv D S Determine f(u, v) and the region S. f(u, v) = S =||

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