Question: Let curve C be the curve r(t) = < 4(sin t - tcost), 4(cost + tsint), 3/2t 2 > for t 0. a. Write the

Let curve C be the curve

r(t) = < 4(sin t - tcost), 4(cost + tsint), 3/2t2 >

for t 0.

a. Write the length of the arc s (as a function of t) measured from the point P(0, 4, 0) and with the same orientation as the original curve.

b. Find the arc-length parametrization r(s) of C.

c. Find the coordinates of the point on the curve that is 10 units away from P in the direction of the increasing parameter.

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