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Jusqu'au prochain examen le 14–15 novembre 2026 :

Sequence Visualization: Arithmetic & Geometric

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Key Formulas

an=a1+(n−1)da_n = a_1 + (n-1)dan=a1⋅rn−1a_n = a_1 \cdot r^{n-1}Sn=n(a1+an)2S_n = \frac{n(a_1+a_n)}{2}

Related Practice

sequencearithmetic sequencegeometric sequencepartial sumCSCA math