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seen Aug 3 '12 at 8:40

Aug
7
awarded  Yearling
Oct
27
awarded  Good Answer
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12
awarded  Enlightened
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7
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Jan
10
answered Factorial Function - Recursive and iterative implementation
Jan
7
answered Do ordered lists contain more information than unordered lists?
Jan
5
comment If $\sum_{1}^{\infty}(a_n)^3$ diverges, does $\sum_{1}^{\infty}(a_n)$?
Yes, prove the contrapositive. I.e. show that if $\sum a_n$ converges, $\sum a_n^3$ will converge.
Jan
5
comment If $\sum_{1}^{\infty}(a_n)^3$ diverges, does $\sum_{1}^{\infty}(a_n)$?
For the sums to converge, you need $|a_n| \to 0$. Thus at some point, you'll have $0 < |a_n| < 1$. Now compare $a_n$ and $a_n^3$.
Nov
2
awarded  Nice Answer
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13
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13
awarded  Necromancer
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26
awarded  Nice Question
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8
awarded  Necromancer
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13
awarded  Nice Question
Dec
30
answered How is addition defined?