00:01
Hello, so here we're told we have a sequence, which is going to be given by a sub n.
00:04
So the nth term, a.
00:05
Sub n, is given by 1 over 3 to the n plus 1.
00:09
So the first term, while when n is 1, we have 1 over 3 to the 1 is just 3.
00:14
This 1 is 4.
00:15
So the first term in the sequence is going to be 1 4th.
00:18
The second term when n is 3, well 3 to the 2 is 9, 9 plus 1 is 10.
00:26
So the second term is 1 tenth.
00:28
The third term, 1 -1 -n is 3.
00:31
3 to the 3 is 3 times 3 times 3.
00:33
That's 27 plus 1 is 28...