Предмет: Алгебра, автор: misijzyk2015t

запишіть формулу n-го члена геометричної прогресії 2,6,18...

Ответы

Автор ответа: dtnth

Ответ:

$b_n=2*3^{n-1}$

Объяснение:

$b_1=2; b_2=6; b_3=18$

$q=b_2:b_1; q=6:2=3$

$b_n=b_1*q^{n-1}$

$b_n=2*3^{n-1}$

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