How do you write the expression for the nth term of the geometric sequence $a_1=6, r=-1/3, n=12$ ?

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Answer 1 · 2017-10-02T12:21:11

$12$ th term is $(-2/59049)$

$n$ th term of geometric sequence is $a_n=a_1* r^(n-1)$

$a_1= 6 , r = -1/3 , n=12:. a_n = 6 (-1/3)^(12-1)$ or

$a_n = 6 (-1/3)^11 = -6 / 177147= -2/59049$

$12$ th term is $(-2/59049)$ [Ans]

How do you write the expression for the nth term of the geometric sequence a_1=6, r=-1/3, n=12a_1=6, r=-1/3, n=12?