jwill27 jwill27

23-01-2019
Mathematics

contestada

For the following geometric sequence, find the explicit formula.
{1.-3,9 ...}

Respuesta :

Аноним Аноним

23-01-2019

Answer:

an = (-3)^(n-1).

Step-by-step explanation:

The formula for the nth term an = a1r^(n-1) where a1 = first term and r = the common ratio.

In our series a1 = 1 and r = -3/1 = -3 so the explicit formula is:

1. * (-3)^(n-1)

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