SOLUTION: Will you show me how to evaluate this problem. 2+5+8+11+.....; S9 I know it is an Arithmatic series, I just don't know how to evaluate it!

Algebra ->  Sequences-and-series -> SOLUTION: Will you show me how to evaluate this problem. 2+5+8+11+.....; S9 I know it is an Arithmatic series, I just don't know how to evaluate it!      Log On


   

Question 604057: Will you show me how to evaluate this problem. 2+5+8+11+.....; S9 I know it is an Arithmatic series, I just don't know how to evaluate it!
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Hint: For any general arithmetic sequence, it's nth partial sum is S%5Bn%5D=%28n%2A%28a%5B1%5D%2Ba%5Bn%5D%29%29%2F2