Pi greco – Serie

La serie di Leibniz

\displaystyle \frac{\pi}{4}=\sum_{n=0}^{+\infty}(-1)^n \frac{1}{2n+1}=1-\frac{1}{3}+\frac{1}{5}-\frac{1}{7}+\dots

La serie di Eulero

\displaystyle \frac{\pi^2}{6}=\sum_{n=1}^{+\infty}\frac{1}{n^2}=\frac{1}{1^2}+\frac{1}{2^2}+\frac{1}{3^2}+\dots=1+\frac{1}{4}+\frac{1}{9}+\dots


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