< Reihen2
Zeige
∑
n
=
0
∞
3
n
+
(
−
2
)
n
5
n
=
45
14
{\displaystyle {}\sum _{n=0}^{\infty }{\frac {3^{n}+(-2)^{n}}{5^{n}}}={\frac {45}{14}}}
.
Eine Lösung erstellen
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