According to the JacobianDeterminant help for my MMA 11.0 (W7, 64-bit)
As of Version 9.0, vector analysis functionality is built into the Wolfram Language
but the only Jacobian headwords are for JacobianDeterminant and JacobianMatrix which are the pages already noted as saying vector analysis is now built in.
JacobianMatrix seems to exist, but trying to evaluate the help file example in those pages doesn't work unless one does indeed evaluate
JacobianMatrix[Cylindrical] // MatrixForm
works but now MMA notes by colouration that JacobianMatrix is shadowed "in multiple contexts"?
How is one supposed to use the now "built in" vector analysis functions? JacobianDeterminant, JacobianMatrix?