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geometric sequence sum

To find the sum of the first $n$ terms of a geometric sequence, use the formula: $S_{n} = \frac{a - a r^{n}}{1 - r}$ , where $r \neq 1$ .

For the formula that finds the sum of an infinite geometric sequence, enter 'infinite geometric sum' into Mathway.

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$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$