Question

Find the first six terms of the sequence.
a1 = -6, an = 4 • an-1.

Answer 1

\(\Huge a_{\color{red}{n}} =4*a_{\color{red}{n-1}}\)
if n =1, you have a1, right? and a1=-6
if n =2, you have a2, right? and \(\Huge a_{\color{red}{2}} =4*a_{\color{red}{2-1}}\) = what??

Answer 2

4?

Answer 3

why 4? \(a_{2-1}=a_1=-6\) so, \(a_2=4*(-6)=-24\)
you can find other terms by this way. I am done in helping. I can check,

Answer 4

-6, -24, -96, -384, -1536, -6144 ? @OOOPS

Answer 5

sounds like a geometric sequence ♥

Answer 6

Haha thanks

Answer 7

Yes, you are correct