- #1
physics246
- 7
- 0
This is the sequence: 1, 2, 5, 14, 41, 122
1. Is this a geometric series or an arithmetic series?
2. I know the formula is a sub n=[3^(n-1)+1]/2, but how do you get that from a sub n=a sub 1 * r^(n-1), which is the geometric formula for series.
1. Is this a geometric series or an arithmetic series?
2. I know the formula is a sub n=[3^(n-1)+1]/2, but how do you get that from a sub n=a sub 1 * r^(n-1), which is the geometric formula for series.
Last edited: