Question

Qual é o 8 termo da PG (-16,64

Answer 1

$> resolucao \\ \\ \geqslant progressao \: geometrica \\ \\ a1 = - 16 \\ a2 = 64 \\ n = 8 \\ \\ q = \frac{a2}{a1} \\ q = \frac{64}{ - 16} \\ q = - 4 \\ \\ \\ \geqslant o \: 8 \: termo \: da \: pg \\ \\ an = a1 \times q {}^{n - 1} \\ an = - 16 \times ( - 4 {}^{8 - 1}) \\ an = - 16 \times ( - 4 {}^{7} ) \\ an = - 16 \times ( - 16384) \\ an = 262144 \\ \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant$