Question

What is the common ratio in this recursive
definition?

Answer 1

r = -1.5

Explanation:

recall that ,the recursive formula for a geometric sequence
`a_n` is :

`a_(n) = r * a_(n-1) \ \ \text{where r is the common ratio }`

therefore

The common ratio of the sequence:

`a_(n) = -1.5 * a_(n-1)`

is r = -1.5