00:01
We're being asked to find the first five terms for the given recursively defined sequence.
00:05
Well, the first term is just a sub 1, which in this case is equal to 5.
00:10
Now, to find the second term, a sub 2, we simply substitute 2 in place of n in our a subn formula.
00:17
So when we do that, we're going to have 2 times a sub 1.
00:20
But remember, a sub 1 was equal to 5.
00:22
So we're going to have 2 times 5, which is equal to 10.
00:26
Now, to find the third term, we substitute 3 in place of n.
00:29
So we have 2 times a.
00:31
2, but remember, a.
00:33
2 is equal to 10.
00:34
So we're going to have 2 times 10, which is equal to 20.
00:38
To find a...