Greetings! Lets solve this shall we ?
So, we must find the composition functions h(x-1) and h(1/x) from the given function h(t) = t + (2/t) such that by replacement of t with (x-1) and (1/x), we get
h(x-1) = (x-1) + [2/(x-1)]; this function is undefined at x = 1 and
h(1/x) = (1/x) + [2/(1/x)] = (1/x) + 2x; this function is undefined at x = 0
I hope this helped!