find the sum of the first 12 terms of the geometric sequence 2,6,12,24
Hello, Shorty!
I assume there's a typo in the problem.
. . As given, it is not a geometric sequence.
You're expected to know these formulas for geometric sequences.
The term: .
The sum of the first terms: .
. . where is the first term and is the common ratio.
Find the sum of the first 12 terms of the geometric sequence: .3, 6, 12, 24 . . .
The first term is
The common ratio is
Then: .
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
The very least you could do is crank out the first 12 terms and add!
. .
What was stopping you?