CalculusEasyInfinite Sequences and Series ShareInfinite Sequences and Series · Easy problemCompute the third partial sum S3S_3S3 of ∑n=1∞12n\displaystyle\sum_{n=1}^{\infty}\frac{1}{2^{n}}n=1∑∞2n1.Check Show answer Walk through it step by step Practice more like this Review this concept