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Find a tangent vector of unit length at the point with the given value of the parameter t. r(t) = (9 + +3 )i+ t2j

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Find a tangent vector of unit length at the point with the given value of the parameter t. r(t) = (9 + +3 )i+ t2j t = 1The vector function r(t) represents the position of a particle at time t. Find the velocity and speed at the given value of t. r(t) = (t9 + 2t)i + (t2 + 3t)j t = 1 72 X Find the velocity, acceleration, and speed of a particle with the given position function. r(t) = 5 cos(t)i + 4 sin(t)j v(t) (5 sin(t), 4005(0) y (5 cos(t), 4sin(t)> a") |V(f)|

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