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My ans is r (t) = (8e^(t/2) + (- 6)) i + (sin^(-1) *(t/2) + (-1)) j + (3 (- cos 2t ) + 8) k but I’m not sure if it correct.

/in /by

My ans is r (t) = (8e^(t/2) + (- 6))

i + (sin^(-1) *(t/2) + (-1)) j + (3 (- cos 2t ) + 8) k

but I’m not sure if it correct.

 
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