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Mathematica
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onepound
  • Member for 8 years, 11 months
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I'm currently learning Number Theory.

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11
What does the !! mean in trigonometric identity?
10
Is there an identity for $\sum_{k=0}^{n-1}\tan^4\left({k\pi\over n}\right)$?
9
Is there any identity for $\sum_{k=1}^{n}\tan\left(\theta+\frac{k\pi}{\color{red} {2n+1}}\right)$?
8
bath and sink connected on same pipe - bath gurgling when sink bowl emptied
5
Is there an identity for $\sum_{k=0}^{n-1}\csc\left(x+ k \frac{\pi}{n}\right)\csc\left(y+ k \frac{\pi}{n}\right)$?

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