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Find the Speed of a Particle with the Given Position r(t)=42ti+e4tje4tk\mathbf { r } ( t ) = 4 \sqrt { 2 } t \mathbf { i } + e ^ { 4 t } \mathbf { j } - e ^ { - 4 t } \mathbf { k }

question 9

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Find the speed of a particle with the given position function.
r(t) =42ti+e4tje4tk\mathbf { r } ( t ) = 4 \sqrt { 2 } t \mathbf { i } + e ^ { 4 t } \mathbf { j } - e ^ { - 4 t } \mathbf { k }


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