Functions 11: Series and Sequence 2
posted by lg on .
The sum of the first two terms of a geometric sequence is 3. The sum of the next two terms is 4/3. Find the first four terms of the sequence.
Let the four terms be a,b,c,d, and be the common ratio.
(c+d)/(a+b) = r² = (4/3)/3=4/9
r=√(4/9)=±2/3, assume 2/3
Thanks a lot:)