Write a Matlab$/$Octave function samplehold$($t$,$x$,$h$)$ which, from the signal x$($t$),$ where t belongs to the interval $[0,1]$ and $1>$ h $>0,$ returns a corresponding signal $($with as many elements as the vector x$($t$))$ which is sampled in a holding circuit with the sampling interval h$.$ Then the final result will thus be x$(0)$ in the interval $[0,$h$[,$ x$($h$)$ in the interval $[$h$,2$h$[$ etc. Corresponding graph can be produced with the graphics function "stairs.m$",$ but this is not what should be used here. Apply accuracy to four decimal places