(Solved): Which following MATLAB commands can you use to plot the figure below given the signal \( x(t)=\cos ...

Which following MATLAB commands can you use to plot the figure below given the signal \( x(t)=\cos (\pi t) ? \) Select all that may plot the figure. \[ t=0: 0.01: 4 \] \[ \mathrm{t}=0: 4 ; \] \[ x=\cos \left(p^{*} t\right) ; \] plot \( (\mathrm{t}, \mathrm{x}) \); stem(t, x);