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If f(ac) = In(a) where a E 1, 3 is rotated about the x-axis, then the area of the resulting surface is SA = 2T or SA = 2TIf f(ac) = In(a) where a E 1, 3) is rotated about the y-axis, then the area of the resulting surface is SA = 2T or SA = 2Tsec (a) sin(x) dac = sec (x + C COSTo evaluate /m1n(:c) dz; using integration by parts. what shouLd we set dv to be? Select 1 of the 4 choices _____ ' I To evaluate [3:6 5111(33) aim we can apply integration by parts C] times. We set u :i :on the rst application