Find an example where hat$(u)(f)$ is $0$ for $|f|>3W$ and nonzero for but where, with $T=\frac{1}{2W},s(kT)=v_0(kT)($as defined in $($:$v_m(t)={\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}(hat(u))(f)rect(fT-m)e^{j2ft}(d)f\}$ for all kinZ. $s(t)$ is the sampling approximation of $u(t).($Hint: Note that it is equivalent to achieve equality between hat$(s)(f)$ and hat$(u)(f)$ for $|f|W.)$