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  3. consider the following vector function.r(t) = (7t2

Consider the following vector function.r(t) = (7t2, sin(t)- t cos(t), cos(t) + t sin(t)), t>...

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Consider the following vector function.r(t) = (7t2, sin(t)- t cos(t), cos(t) + t sin(t)), t> 0(a) Find the unit tangent and unit normal vectors T(t) and N(t).T(t) =N(t) =(b) Use this formula to find the curvature.k(t) =

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