Posted by sarah on Sunday, March 2, 2008 at 8:17pm.
for each series determine if the series is absolutely convergent and convergent
the sum from 0 to infinity of (1)^n/(the square root of (n+1))
I did the ratio test and got 1, which is less than 0 making it absolutely convergent, but do i need to take the absolute value of 1? which would then make the test inconclusive?

calculus  Count Iblis, Sunday, March 2, 2008 at 8:28pm
Yes, you need to take the absolute value of everything, so you get 1 which is inconclusive. If you do the integral test, you find that it diverges.
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