## Online Course Discussion Forum

### Need help on 7.29, 7.30 II-A

Need help on 7.29, 7.30 II-A

I am not sure how to do them can I get some help?

Thanks

Re: Need help on 7.29, 7.30 II-A

7.29: List the first few terms of the summation, and you should recognize it.  (I kept my explanation short)

7.30: Cases to consider: What happens if the first "2" in the summation of $F_n$ is the first term (an example of this is 2+2+1+2+1)?  What if it's the second (example of this is 1+2+1+2+1)?  What if you see the first "2" term at the very end, and all the rest are 1's (an example is 1+1+1+2)?  What summation of $F_n$ is not considered?

Re: Need help on 7.29, 7.30 II-A

I still need help on part a on 7.29

Re: Need help on 7.29, 7.30 II-A

Watch the week 4 video on PIE and watch the section that talks about this question. Look at the formula made in the video and compare it to the one given in the question.