A continuous$-$time signal $x(t)$ is ideally sampled for every $T_s=\frac{}{30}$ seconds and yields the following discrete$-$time sequence

$x(n{T}_s)=x(t){|}_t||=n{T}_s=\frac{sin(2\frac{n}{3})}{n{T}_s}+\frac{}{10}(\frac{sin(\frac{n}{3})}{n{T}_s}{)}^2$