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14. Sequences & Series
14. Sequences & Series / Series / Problema 9
Problema 9

Find the sum of the infinite series ∑j=1∞(65j−65j+1)\(\displaystyle\)\(\sum\)_{j=1}^{\(\infty\)} \(\left\)( \(\frac{6}{5^j}\) - \(\frac{6}{5^{j+1}\)} \(\right\)) using a geometric series argument.