How do you write the first five terms of the geometric sequence #a_1=6, r=-1/4#?
1 Answer
Aug 9, 2017
Explanation:
#"the terms in a geometric sequence are"#
#a,ar,ar^2,ar^3, ...... ,ar^(n-1)#
#"where a is the first term and r the common ratio"#
#"to obtain any term in the sequence multiply the previous"#
#"term by r"#
#a_1=6#
#a_2=6xx-1/4=-3/2#
#a_3=-3/2xx-1/4=3/8#
#a_4=3/8xx-1/4=-3/32#
#a_5=-3/32xx-1/4=3/128#
