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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §10.1 The Geometric Series, #23 · Calculus · Series

Find the functions which equal the sums.

$tan x - \frac{1}{3} tan^{3} x + \frac{1}{5} tan^{5} x - \dots$

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §10.1 The Geometric Series, #23

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