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Multivariable & Vectormedium
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Find the arc length of the curve r(t)=⟨cos⁡(2t),sin⁡(2t),t⟩\mathbf{r}(t) = \langle \cos(2t), \sin(2t), t \rangler(t)=⟨cos(2t),sin(2t),t⟩ for 0≤t≤π0 \leq t \leq \pi0≤t≤π.