How do you find the common ratio of the geometric sequence 7,-14,28,-56?
1 Answer
Jul 1, 2017
Explanation:
"the common ratio r of a geometric sequence is"
r=(a_2)/(a_1)=(a_3)/(a_2)=........ =a_n/(a_(n-1)
"here " a_1=7 , a_2=-14
rArrr=(-14)/7=-2
