AP

MATHEMATICS · Subjective · AP · Calculus BC · Infinite Sequences and Series · Infinite Sequences and Series

Problem

Evaluate ∑n=1∞[4 (37)n+(−1)n 6 (12)n]\displaystyle\sum_{n=1}^{\infty}\bigl[4\,(\tfrac{3}{7})^{n}+(-1)^{n}\,6\,(\tfrac{1}{2})^{n}\bigr].

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