Question

The nth term of a sequence -2,6,-18,54,… is:​

Answer 1

Answer:

-2(-3) rase to power n-1

Answer 2

SOLUTION

TO DETERMINE

The n th term of a sequence

- 2 , 6 , - 18 , 54 ,…

EVALUATION

Here the given sequence is

- 2 , 6 , - 18 , 54 ,…

The given sequence is geometric sequence

First term = a = - 2

Common Ratio = - 3

Hence the n th term of a sequence

$\sf{ = a \times {r}^{n - 1} }$

$\sf{ = ( - 2) \times {( - 3)}^{n - 1} }$

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