Question: Time derivative of a Jacobian (gradient of a velocity vector that is dependent in time)

See the post link below which gives the ability to find the gradient of a vector, not a scalar field.

http://www.mapleprimes.com/forum/gradientvectornotgradientscalarfunction

The solution was to use the Jacobian command.  Now I need to take the time derivative of that expression because now the velocity is a function in time.  Unfortunately, MAPLE wants an algebraic expression for d/dt operations.  What command to I need to use for this operation??

 

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