MediumPower & Taylor series

Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §10.5 Power Series, #37 · Calculus · Power & Taylor series

From … find the Taylor series of … up to

From $sec x = 1/ [1 - (1 - cos x)]$ find the Taylor series of $sec x$ up to $x^{6}$ . What is the radius of convergence $r$ (distance to blowup point)?

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §10.5 Power Series, #37

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