00:01
Here is the answer for this question.
00:03
In this question here we have non -homogeneous recursion relation which is a0 equals to 1, a1 equals to 4, an is equals to an -1 plus 2 an plus sorry minus 2 plus 3 for the n is greater than equals to 2.
00:21
Here we have to find first we have to find the homogeneous solution.
00:24
So an equals to an minus 1 plus 2 an minus 2.
00:32
So here x square equals to x plus 2.
00:36
So we are solving for the roots for the characteristic equation x square minus x minus 2 equals to 0.
00:44
So here x minus 2 multiply x plus 1 it's equals to.
00:50
So here we have the root which is x is equals to 2 and the x is equals to minus 1.
00:56
Here we have the homogeneous solution an h is equals to a multiply 2 n plus b multiply minus 1 and so here next we have to find the particular solution.
01:12
So here an p is equals to c.
01:16
So here we are substituting these into the original non -homogeneous solution which is the c is equals to c plus 2 c plus 3 for the solve for c is equals to 3.
01:30
So here we have an p is equals to 3.
01:34
Now here we are combining the homogeneous particle.
01:38
So so an is equals to an h plus an p...