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Evaluate the integral by making an appropriate change of variables. 9 cos (3 (y â x)/( y + x) dA R where R is the trapezoidal region with vertices (6, 0), (8, 0), (0, 8), and (0, 6)
Evaluate the integral by making an appropriate change of variables.
Double Intergral over the region R(9cos(9((y-x)/(y+x)))dA
where R is the trapezoidal region with vertices (5, 0), (7, 0), (0, 7), and (0, 5)