SOLUTION: It says to write the following arithmetic series in sigma notation...2 problems 5+1+(-3)+(-7)+(-11).... -3,0,3,6,9,...

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Question 612395: It says to write the following arithmetic series in sigma notation...2 problems
5+1+(-3)+(-7)+(-11)....
-3,0,3,6,9,...

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi, 

write the following arithmetic series in sigma notation:

{5+1+(-3)+(-7)+(-11)....}  d= -4 and a%5Bn%5D=a%5B1%5D%2B%28n-1%29%2Ad+=+5+%2B+%28n-1%29%28-4%29+=+-4n+%2B+9

sum%28+%28-4n%2B9%29%2C+n=1%2C+infinity+%29

{-3,0,3,6,9,...} d= 3 and a%5Bn%5D=a%5B1%5D%2B%28n-1%29%2Ad+=+-3+%2B+%28n-1%29%283%29+=+3n+-6

sum%28+%283n-6%29%2C+n=1%2C+infinity+%29