195k views
4 votes
123 question time.

Determine a pattern rule for the following sequence, algebraically.

2,3,5,9,17

User Crouch
by
8.2k points

1 Answer

5 votes
whats up with the creepy rabbit

anyway

we see we add 1, add 2 add 3, add4, add 8?
wait
ah,
double and minus 1

f(n)=2f(n-1)-1
and the first term is 2
hmm
it can't be put into an aritmetic sequcne because there isn't a single common differnce

so we wil have to say
f(n)=2f(n-1)-1
where f(1)=2
or in another form

a_n=2a_(n-1)-1
User RavuAlHemio
by
8.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories