SOLUTION: Find the nth term of the geometric sequence where a1=4 and a(k+1)=1/2a(k) i am so stuck on this question! i dont even know where to start Thanks!

Algebra ->  Sequences-and-series -> SOLUTION: Find the nth term of the geometric sequence where a1=4 and a(k+1)=1/2a(k) i am so stuck on this question! i dont even know where to start Thanks!      Log On


   



Question 414690: Find the nth term of the geometric sequence where a1=4 and a(k+1)=1/2a(k)
i am so stuck on this question! i dont even know where to start
Thanks!

Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

sequence is........
4, 2, 1 , 1/2, 1/4 ............
nth term = a .r^(n-1)
= 4 * (1/2)^(n-1)