Find .
Hint
There are actually five terms here, 'cause we're starting at n = 0.
Answer
-10
There will be seven very odd terms.
77
Factoring out a 3 may help.
0
Multiply by 4 at the very end.
Once again, multiply by 12 last.
Solve for x:
Write 'em out.
x = 7
Don't wait so long to multiply the 3 this time.
x = 3
Write the series using sigma notation: 1 + 3 + 5 + 7 + 9
Use 2 as a factor in your rule.
Write the series using sigma notation:
Use 2 as a constant multiple.
You've been inactive for a while, logging you out in a few seconds...
.
.
.
.
.
