Answer:
The question is not clear, but here is a similar question with the same approach.
Integral from 0 to 1 Integral from 1 to 2 Integral from 2 to 3, { (x+y+z) } dx dy dz by changing the order of integration in an appropriate way.
Explanation:
The approach is that of multiple integral where changing the order of integration is done appropriately
The step by step with detailed workings are shown in the attachment below.