I need help with part (c.). The answer is 1/120.

3. Let f(:1:, y, z) = L'(1 1r y z)5, where 8 2 0 is a parameter. a) [3 marks] Sketch the region of integration 9 for the following triple integral f/Q( f(scy,z) )de ff folH xy,z )dzdydcv. b) [3 marks] Evaluate the repeated integral from a) for the special case when 8 = O. c) [3 marks] Evaluate the repeated integral from a) for the special case when 8 : 1