Question

3) Calcule o oitavo termo da PG de razão 2 e primeiro
termo igual a 9.

Answer 1

$> \: resolucao \\ \\ \geqslant \: progressao \: \: geometrica \\ \\ a1 = 9 \\ q = 2 \\ n = 8 \\ \\ = = = = = = = = = = = = = = \\ \\ > \: o \: oitavo \: termo \: da \: pg \\ \\ an = a1 \times q {}^{n - 1} \\ an = 9 \times 2 {}^{8 - 1} \\ an = 9 \times 2 {}^{7} \\ an = 9 \times 128 \\ an = 1152 \\ \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant$