File Preview $$ pointsn $securities$ with return rates $r_i,i=$

$1,2,$dots,$n.Itis$ given that

${}_{ij}=\{\begin{array}{ccc}4{}^2& if& i=j\\ 2{}^2& if\\ 0& \text{o}\text{t}\text{h}\text{e}\text{r}\text{w}\text{i}\text{s}\text{e}& \\ |i-j|=1\end{array}$

Find the portfolio's standard deviation ${}_p$ and the $\underset{n}{lim}{}_p.$ What does this tell you about

the diversification benefits $of$ investing $in$ many assets?