00:01
For being asked to find the first five terms for the given recursively defined sequence.
00:05
Well, remember, the first term is just a sub 1, which they tell us is negative 2.
00:09
So now we have the first term.
00:11
To find the second term, we simply substitute 2 in place of n in our a subn formula.
00:16
So when we do this, we're going to get 2 plus 3 times a sub 1.
00:21
But remember, a sub 1 is negative 2.
00:24
So we're going to have 2 plus 3 times negative 2, and 2 plus 3 times negative 2 is negative 4.
00:32
Now, to find a.
00:33
3, we substitute 3 in place of n.
00:35
So we're going to have 3 plus 3 times a sub 2.
00:39
But remember, a sub 2 is negative 4.
00:42
So we're going to have 3 plus 3 times negative 4.
00:45
Well, 3 times negative 4 is negative 12, plus 3 is negative 9...