![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
Due to varying of time starting from initial point zero with initial condition zero, the response cure shows transient response until its final value of time; the response is almost steady-state from final value to infinity time; however, the steady-state response is no parallel with the input command.