Let f(x) = x - cos x. (a) Does the equation x - cos x = 0

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Let f(x) = x - cos x.
(a) Does the equation x - cos x = 0 have a solution between x = 0 and x = π? How do you know?
(b) Find the equation of the tangent line at x = π/2.
(c) Where does the tangent line from part (b) intersect the x-axis?

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Calculus

ISBN: 978-0131429246

9th edition

Authors: Dale Varberg, Edwin J. Purcell, Steven E. Rigdon

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Question Posted: Jun 21, 2016 09:42 AM

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Let f(x) = x - cos x. (a) Does the equation x - cos x = 0

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a f0 0 cos 0 0 1 1 f cos 1 1 Since x cos x is continuous f 0 0 and f 0 there i...View the full answer

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