00:01
In this question, we have a recursive defined sequence, a, n plus 1 is equal to 2an minus 3, a n minus 1, and the initial terms a1 is equal to 2 and a2 is equal to 4.
00:21
We need to find the next 4 terms.
00:24
Let's see how to solve this question.
00:27
Substitute n is equal to 2 in the given recursive defined sequence.
00:33
So we can write a2 plus 1 is equal to 2a2 minus 3 a2 minus 1.
00:45
So this will be equal to a3 is equal to 2a2 minus 3a1.
00:53
Substitute the values of a1 and a2.
00:57
So a3 becomes 2 into 4 minus 3 a1.
01:06
1 is equal to 2 into 2.
01:08
So this will be equal to 8 minus 6 is equals to 2.
01:19
Now substitute n is equal to 3 in the given recursive defined sequence.
01:30
So we can write a 3 plus 1 is equal to 2a3 minus 3 a 3 minus 1.
01:41
So this will be equals to a4 is equal to 2a3 minus 3a2.
01:49
We have the values of a2 and a3.
01:51
Substitute those values.
01:54
So we can write a4 is equal 2 into 2 minus 3 into 4.
02:04
So this will be equals to 4 minus 12 is equal to minus 8...