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IA. Far \( n=1 \)
1. \( \sum \limits_{k=1}^{1} \frac{1}{1}=1 \leq z-1=1 \)
IV: \( \sum \limits_{k=1}^{n} \frac{1}{k^{2}} \leq 2-\frac{1}{n} \)
Is \( \sum \limits_{k=1}^{n+1} \frac{1}{k^{2}}=\sum \limits_{k=1}^{n} \frac{1}{k^{2}}+\frac{1}{(n+1)^{2}} \)
\( \frac{\leqslant}{\frac{1}{(n+1)^{2}}}+2-\frac{1}{n} \leq \frac{12}{(n+1)^{2}-\frac{1}{n+1}} \)
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IA. Far \( n=1 \)
1. \( \sum \limits_{k=1}^{1} \frac{1}{1}=1 \leq z-1=1 \)
IV: \( \sum \limits_{k=1}^{n} \frac{1}{k^{2}} \leq 2-\frac{1}{n} \)
Is \( \sum \limits_{k=1}^{n+1} \frac{1}{k^{2}}=\sum \limits_{k=1}^{n} \frac{1}{k^{2}}+\frac{1}{(n+1)^{2}} \)
\( \frac{\leqslant}{\frac{1}{(n+1)^{2}}}+2-\frac{1}{n} \leq \frac{12}{(n+1)^{2}-\frac{1}{n+1}} \)
Ich hoffe man kann das Foto erkennen, keine Ahnung wieso der Text drumherum erscheint.