How do you find the first five terms of the geometric sequence #a_1=2# r=-3?
1 Answer
Apr 23, 2017
Explanation:
#"the terms in a geometric sequence are"#
#a,ar,ar^2,ar^3,......,ar^(n-1)#
#"where r is the common ratio"#
#r=a_2/a_1=a_3/a_2= ...... =(a_n)/a_(n-1)# To obtain a term in the sequence multiply the previous term
by r
#rArra_1=2#
#rArra_2=2xx-3=-6#
#rArra_3=-6xx-3=18#
#rArra_4=18xx-3=-54#
#rArra_5=-54xx-3=162#
