How do you find nth term rule for r=3 and $a_{1} = 2$ $a_1=2$ ?

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Answer 1 · 2016-07-19T02:42:28

The formula for the general term for each geometric sequence is

$a_{n} = a_{1} \cdot r^{n - 1}$ $a_n=a_1*r^(n-1)$

hence

$a_{n} = 2 \cdot 3^{n - 1} = \frac{2}{3} \cdot 3^{n}$ $a_n=2*3^(n-1)=2/3*3^n$

How do you find nth term rule for r=3 and a_1=2a1=2a_1=2?