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#
