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(eroare: eq.0/37917)\sqrt{2}
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(eroare: eq.0/37921)\sum_{n=1}^{\infty}(-7)(-0.1)^{n-1}=-7\sum_{n=0}^{\infty}(-0.1)^{n}=-7\sum_{n=0}^{\infty}\left(-\frac{1}{10}\right)^{n}=-7\frac{1}{1+\frac{1}{10}}=-\frac{70}{11}
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Daca [ equation ]$\sqrt{6}$[/equation]-[ equation ]$\sqrt{2}$[/equation]
m(\widehat{BAD})=\frac{5\pi}{12},
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