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Mnenie [13.5K]
4 years ago
11

For the following geometric sequence find the explicit formula. {12, -6, 3, ...}

Mathematics
2 answers:
seropon [69]4 years ago
8 0

Answer:

a_n=12 (-0.5)^{n-1}

Step-by-step explanation:

Given geometric sequence ,

12, -6, 3, ...........

First term, a = 12,

Common ratio,

r = \frac{-6}{12}=-0.5

Since, the explicit formula of a Geometric sequence is,

a_n=ar^{n-1}

Hence, the explicit formula of the sequence is,

a_n=12 (-0.5)^{n-1}

11Alexandr11 [23.1K]4 years ago
6 0
12(-1/2) to the exponent n-1

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