Consider the helix represented by the vector-valued function r(t) = (2 cos t, 2 sin t, t).
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Consider the helix represented by the vector-valued function r(t) = (2 cos t, 2 sin t, t).
(a) Write the length of the arc s on the helix as a function of t
by evaluating the integral
(b) Solve for t in the relationship derived in part (a), and substitute the result into the original set of parametric equations. This yields a parametrization of the curve in terms of the arc length parameter s.
(c) Find the coordinates of the point on the helix for arc lengths s = √5 and s = 4.
(d) Verify that
Transcribed Image Text:
S= ·[ [x'(u)]²+ [y'(u)]²+ [z'(u)]² du.
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