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1. The curve r(t) with the given parametric equations x = t2t, y=1+3t, z= a) Find the unit tangent vector T(t) at the point

1. The curve r(t) with the given parametric equations x = t2t, y=1+3t, z= a) Find the unit tangent vector T(t) at the point P(0,7,- 14 3 + 3 2 b) Find the parametric equation for the tangent line to the curve r(t) at the point P(0,7,

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