Question: 1. Assume that (x,y,z,t) = (x-z) t i + (y +z)tj +(x+y) k. Determine the velocity and acceleration at (1,4,2,1).

1. Assume that (x,y,z,t) = (x-z) t i + (y +z)tj +(x+y) 

1. Assume that (x,y,z,t) = (x-z) t i + (y +z)tj +(x+y) k. Determine the velocity and acceleration at (1,4,2,1).

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