Question

For the following geometric sequence find the recursive formula. {1, -3, 9, ...}

Answer 1

The answer is : Gn= Gn- 1* -3

Answer 2

`g_(n)=g_(n-1) *-3`

Explanation:

A recursive formula is
`g_(n)=g_(n-1) *r`. N is the number of terms and r is the rate of change. R here equals -3 because you are multiplying by -3 eachtime. Therefore, the recursive formula is
`g_(n)=g_(n-1) *-3`