(d) Show that s(t)>1-t when -2

Problem 6. Let r(u) (1 - 22)3 In this problem, you may use any facts about the graph of r(1) without having to prove them-just state clearly what facts you're using (for example, r(u) is strictly decreasing on some interval). Let s( ) be the function defined on (-27, oo) that is the inverse function to r(u) on that interval