Question

даю 30 баллов помогите пжпжпжпжп

Answer 1

$a_{n} = \frac{ {n}^{3} }{ {3}^{n} } \\ a_{1} = \frac{1 {}^{3} }{3 {}^{1} } = \frac{1}{3} \\ a_{2} = \frac{2 {}^{3} }{3 {}^{2} } = \frac{8}{9} \\ a_{3} = \frac{3 {}^{3} }{3 {}^{3} } = 1 \\ a_{4} = \frac{4 {}^{3} }{3 {}^{4} } = \frac{64}{81}$