- #1

bigpunz04

- 4

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Hello -

I am having a tough time understanding the problems in the attached picture (Problem 13). My issue is understanding how I plug in the proposed solutions, specifically those that include

For instance, how do I plug in C or D into the original question? What do I do with the original sub values (n-1) and (n-2) ?

Here is the problem:

"Is the sequence {a

a

a) a

b) a

c) a

d) a

e) a

My approach to question c

8(2

which I believe gives me...

= 16

But that answer is obviously wrong. So I'm thinking that I am not plugging the solutions that include

I am having a tough time understanding the problems in the attached picture (Problem 13). My issue is understanding how I plug in the proposed solutions, specifically those that include

*n*. I am able to solve A and B but unable to solve the rest.For instance, how do I plug in C or D into the original question? What do I do with the original sub values (n-1) and (n-2) ?

Here is the problem:

"Is the sequence {a

_{n}} a solution of the recurrence relationa

_{n}= 8a_{n-1}- 16a_{n-2}if:"a) a

_{n}= 0?b) a

_{n}= 1?c) a

_{n}= 2^{n}?d) a

_{n}= 4^{n}?e) a

_{n}= n4^{n}?My approach to question c

8(2

^{n-1}) -16(2^{n-2})which I believe gives me...

= 16

^{n-1}- 32^{n-2}But that answer is obviously wrong. So I'm thinking that I am not plugging the solutions that include

*n*properly. Ugghh so frustrated.
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