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For the motion r(t), find (a) ds/dt and (b) the distance traveled over the interval described....

For the motion r(t), find (a) ds/dt and (b) the distance traveled over the interval described.

(a) r(t) = (2sinht, (sinh^2)*t), 0 ≤ t ≤ 1.

(b) r(t) = e^t (sin2t, cos2t), 0 ≤ t ≤ ln3

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