How do you write the expression for the nth term of the geometric sequence a_1=64, r=-1/4, n=10?

1 Answer
Jim G.
Jul 25, 2017

256/5(1-(-1/4)^n)

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)

Related questions
See all questions in Geometric Sequences
Impact of this question
2115 views around the world
You can reuse this answer
Creative Commons License