Question

Find the general term a^n for the geometric sequence.
a1=-3 and a2=15 a^n= when I do a^n the n is a small n under the a I just couldn't format it right on here

Answer 1

the general term \(a_n\) is given by
\(\huge a_n = a_1r^{n-1} \)
so a2 here is 15, a1 = -3
can u find r ?

Answer 2

r is -5??

Answer 3

am I wrong??

Answer 4

My final answer would be an=-3(-5)^n-1 is this correct

Answer 5

r=-5 is correct.
and final answer is also correct!
sorry for late reply

Answer 6

ok no prob thank you I was just unsure :)

Answer 7

welcome ^_^