z= a) Write a parametrization of the surface in terms of polar coordinates r,0: r(r,0)=(0.) b) Write a double integral which computes the area of this surface between the planes z = 2x 12 ra 1- dr de (1+r)b 0 r1 r1 = r2 = Enter the correct coefficients "a", "b" of the powers of "r" which appear in the previous integrand, which can be any numbers, including zero and one a = b =

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