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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §10.1 The Geometric Series, #46 · Calculus · Series

Find one decimal of … beyond … from the series for …

Find one decimal of $π$ beyond $3.14$ from the series for
$4 tan^{- 1} \frac{1}{2}$ and $4 tan^{- 1} \frac{1}{3}$ . How many terms are needed in each
series?

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §10.1 The Geometric Series, #46

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