This week, I have learned how to solve a geometric sequence. The difference between geometric and arithmetic is that you have addition for arithmetic and multiplication on geometric.
Geometric sequence : In geometric sequence, you use the formula,
is the first term and r is the common ratio.
To find the common ratio, you divide the second term from the first term.
So, if you have as 5 and your common ratio is 2, you would have something like this. 5, 10, 20, 40, 80, 160
Now lets have a practice. 2, 4, 8, 16, 32, 64 …
Let’s find the
r=2 = 2 n= 8
Its simple as that. Next week, we will look at something new because we will have a new chapter. Stay tuned