$[$: Week$10.$mlx$]\%\%$

$0n.$

${\displaystyle \underset{k=1}{\overset{n}{}}}{k}^2=f(n)=\frac{1}{3}{n}^3+\frac{1}{2}{n}^2+\frac{1}{6}n$

$f(n)1000n.$

$($disp $$ fprintf $)$

$n=3)$

$F(n)$ exceeds $1000$ for the first time when $n=3$

$2$: $$ for $.$

$.$

$3$: $$ while$.$

$f(n)1000$ while $....$ end $.$

While$$ while break $$

MATLAB