Let c(t) = (e t cos t, e t sin t). Find the first positive value of

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Let c(t) = (e−t cos t, e−t sin t).

Find the first positive value of t0 such that the tangent line to c(t0) is vertical, and calculate the speed at t = t0.

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Calculus

ISBN: 9781319055844

4th Edition

Authors: Jon Rogawski, Colin Adams, Robert Franzosa

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