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Sortie12 (rosica | curriculum) |
Sortie12 (rosica | curriculum) |
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Riga 18:
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<math>\sum_{m=1}^\infty\sum_{n=1}^\infty\frac{m^2\,n}
{3^m\left(m\,3^n+n\,3^m\right)} =0</math>
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Riga 18:
==
<math>\sum_{m=1}^\infty\sum_{n=1}^\infty\frac{m^2\,n}
{3^m\left(m\,3^n+n\,3^m\right)} =0</math>
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