Question: Specifying jacobian in dsolve call

Hello.

I'm solving a system of 16 odes which is stiff. I'm using the rosenbrock solver and I would like to specify

the jacobian matrix for the solver. I found something in Maple's help but it didn't help me a lot. 

Does anyone have some even simple example how to specify jacobian matrix in dsolve call, please? 

Thanks. 

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