Assume that is smooth on [a, b] and partition the interval [a, b] in the usual
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Assume that ƒ is smooth on [a, b] and partition the interval [a, b] in the usual way. In each subinterval [xk-1, xk], construct the tangent fin at the point (xk-1, ƒ(xk-1)), as shown in the accompanying figure.
a. Show that the length of the kth tangent fin over the interval [xk-1, xk] equals
b. Show that
which is the length L of the curve y = ƒ(x) from a to b.
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Related Book For
Thomas Calculus Early Transcendentals
ISBN: 9780321884077
13th Edition
Authors: Joel R Hass, Christopher E Heil, Maurice D Weir
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