Unit-step response of the first-order system may be found by assuming R(s)=1ys as Y R TS+1 zS+1八s)szs+1 y()=1-e (3-3-4 Unit-ramp response of the first-order system may be found by assuming R(s)=1/s2 as Y(S=RI Ts+1 τs+1八s2)s2szs+1 (3-3-5) ()=t-(1-e") (3-3-6) 2022-2-3 72022-2-3 7 Unit-step response of the first-order system may be found by assuming Rs  1 s as     1 1 1 1 1 1 1 Y s R s s s s s s                     Unit-ramp response of the first-order system may be found by assuming as   2 R s  1 s     2 2 2 1 1 1 1 1 1 1 Y s R s s s s s s s                         1  t y t t e         1 t y t e     (3-3-3) (3-3-4) (3-3-5) (3-3-6)