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2. Consider the curve r(t) = tcoslt + tsin(t}j + t2 k. (a) Calculate the unit tangent vector and unit normal vector. (b) Express the

2. Consider the curve r(t) = tcoslt + tsin(t}j + t2 k. (a) Calculate the unit tangent vector and unit normal vector. (b) Express the acceleration in terms of the tangential and normal components

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