Find the nth term of the geometric sequence.
-$$a = 2 ; r = - 4$$
A) $a _ { n } = 2 \cdot 4 ^ { n - 1 }$
B) $a _ { n } = - 4 \cdot 2 ^ { n - 1 }$
C) $a _ { n } = 2 \cdot - 4 ^ { n }$
D) $a _ { n } = 2 \cdot - 4 ^ { n - 1 }$

Question

Quizplus · Accepted Answer

The nth term of a geometric sequence is given by $a_n = a \cdot r^{n-1}$, where $a$ is the first term and $r$ is the common ratio. Here, $a = 2$ and $r = -4$, so the nth term is $a_n = 2 \cdot (-4)^{n-1}$.

Find the Nth Term of the Geometric Sequence a=2;r=−4a = 2 ; r = - 4a=2;r=−4

Find the Nth Term of the Geometric Sequence $a = 2 ; r = - 4$