h$2($t$)=2$ sinc $(2$t$)$Find the output of each system to the following input x$($t$)=$ cos$(3$t$)$ cos$(4$t$).$ If weare given an input$-$output pair of an unknown LTI system, can we always identify thissystem?Hint: Recall the input output relationship. If h$($t$)$ is real,x$($t$)=$ cos$(0$t$)$ y$($t$)=|$H$($j$0)|$ cos$(0$t $+$ H$($j$0))$