SOLUTION: For the following series, express the finite sum in summation notation: 3 − 9 + 27 − 81 + 243 − 729

Algebra ->  Sequences-and-series -> SOLUTION: For the following series, express the finite sum in summation notation: 3 − 9 + 27 − 81 + 243 − 729      Log On


   

Question 748250: For the following series, express the finite sum in summation notation:
3 − 9 + 27 − 81 + 243 − 729
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
these numbers are all powers of 3 with 3^1=3 up to 3^6=729. Therefore
%0D%0Asum%283%5Ei%2Ci=1%2C6%29%0D%0A