Consider the solid W in the first octant bounded by the planes y = x, z = y, and z = 4 and consider the integral xdV. A plot of the region is given below. The black dot is the origin - the coordinate axes are in their standard place, Mathematical labels things differently for visibility. Write a set descriptor for the region for order of integration dxdydz and write the integral as an iterated triple integral with this order of integration. Same as (a) for order of integration dzdxdy. Same as (a) for order of integration dydxdz. Evaluate the integral.