Show that the arc length of the catenary y = cosh x over the interval [0, a]

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Show that the arc length of the catenary y = cosh x over the interval [0, a] is L = sinh a.

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Calculus Early Transcendentals

ISBN: 978-0321947345

2nd edition

Authors: William L. Briggs, Lyle Cochran, Bernard Gillett

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