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Find the Velocity of a Particle with the Given Position r(t)=19e5ti+5e21tj\mathbf { r } ( t ) = 19 e ^ { 5 t } \mathbf { i } + 5 e ^ { - 21 t } \mathbf { j }

Question 96

Multiple Choice

Find the velocity of a particle with the given position function.
r(t) =19e5ti+5e21tj\mathbf { r } ( t ) = 19 e ^ { 5 t } \mathbf { i } + 5 e ^ { - 21 t } \mathbf { j }


A) v(t) =19e5ti+e21tj\mathbf { v } ( t ) = 19 e ^ { 5 t } \mathbf { i } + e ^ { - 21 t } \mathbf { j }
B) v(t) =95e5ti105e21tj\mathbf { v } ( t ) = 95 e ^ { 5 t } \mathbf { i } - 105 e ^ { - 21 t } \mathbf { j }
C) v(t) =19e5ti105e21tj\mathbf { v } ( t ) = 19 e ^ { 5 t } \mathbf { i } - 105 e ^ { - 21 t } \mathbf { j }
D) v(t) =e5ti+105e21tj\mathbf { v } ( t ) = e ^ { 5 t } \mathbf { i } + 105 e ^ { - 21 t } \mathbf { j }
E) v(t) =95e5ti+105e21tjv ( t ) = 95 e ^ { 5 t } \mathbf { i } + 105 e ^ { - 21 t } \mathbf { j }

Correct Answer:

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