How do you write the expression for the nth term of the geometric sequence #a_1=64, r=-1/4, n=10#?
1 Answer
Jul 25, 2017
Explanation:
#"the nth term for a geometric sequence is"#
#•color(white)(x)a_n=(a(1-r^n))/(1-r)larra=a_1#
#rArra_n=(64(1-(-1/4)^n))/(1+1/4)#
#color(white)(rArra_n)=256/5(1-(-1/4)^n)#
