Question 2:Use the transformation u = + + y and v = c - y to evaluate where the region D is in the first quadrant bounded by the coordinates axes and the line rty=1. Question 3: Find the volume of the region bounded below by the cone = = va + y and above by the plane = = 2 in the first octant using cylindrical and spherical coordinates. Question 4: Use polar coordinates to fin nd the area of the following regions 1. c'ty' -2 0 x' ty' 21 2. '+ 2x + y' 0 yx ys -V3r 3. x' + 2y + y' 0 y