.7} . Use the transformation a = my, 1} = to nd ff y2 dA, where R is the region in the R 3' rst quadrant enclosed by the lines 58 = 23;, y = 2m and the curves 33y = 1 and my = 2.[3] . Use an appropriate change of variables to nd the area of the region enclosed by the curves 333,12 = 1, 3:312 = 3, my = 1 and my = 2. [4]