Consider the geometric sequence 55, −15-15, 4545, ... Identify the common ratio, rr.

Geometric Sequences

13. Sequences, Series, and the Binomial Theorem / Geometric Sequences / Problem 2

Problem 2

Consider the geometric sequence $5$ , $negative 15$ , $45$ , ... Identify the common ratio, $r$ .

$3$

$- \frac{1}{3}$

Undefined

$negative 3$