1. Consider the following openloop system u(t) D(s) G(s) y(t) where D(s) = :11 and G(s) = (a) (1pt) Compute the unitstep response of the openloop system from u to y. (b) (1pt) Consider the following closedloop system r(t)_o_' y(t) jl and G(s) = % where D(s) = s Compute the transfer function from r to y and find k; and k. so that the closed- loop system from r to y has repeated poles at 10. (c) (1pt) Compute the unitstep response of the closed-loop system from r to y with k; and k, from (b). What is the steady-state output y,, to a unit-step reference input r(t) = u(t)