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I have the problem which I must find convergent or divergent:
infinity _____
∑ 1/(√n^3-2)
n= 2
I used the Comparison Test with a p-series to get that it's convergent. Is this correct?
_____ ____
1/(√n^3-2) < 1/(√n^3) = 1/n^(3/2) so it converges
Last edited by woodoo (2007-02-11 17:38:11)
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1/√(n³-2) > 1/√n³, so that part of your reasoning doesn't work. It shouldn't be too hard to tweak it though, you're on the right lines.
Why did the vector cross the road?
It wanted to be normal.
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