Practice!

Sample Problem

Write the first five terms of the sequence:

a1=256, ak+1=(-1/4)ak

, , , ,

Solution

a1=256, ak+1=(-1/4)ak

a1=256 (as given)

a2=(-1/4)(256)=-64

a3=(-1/4)(-64)=16

a4=(-1/4)(16)=-4

a5=(-1/4)(-4)=1

=256, -64, 16, -4, 1