Sanders Watson
04/03/2024 · Middle School
3) Soit \( \left(v_{n}\right) \) la suite numérique définie par \( v_{n}=\frac{2-u_{n}}{1-u_{n}} \), pour tout entier naturel \( n \) 0.5 a) Montrer que \( \left(v_{n}\right) \) est une suite géométrique de raison \( \frac{2}{3} \) b) Montrer que \( u_{n}=1+\frac{1}{1-\left(\frac{2}{3}\right)^{n+1}} \), pour tout entier naturel \( n \) c) Calculer la limite de la suite \( \left(u_{n}\right) \)
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La suite \( \left(v_{n}\right) \) est une suite géométrique de raison \( \frac{2}{3} \).
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