Thread Subject: Analytic Jacobian in ODE solvers - Matlab vs Simulink

In Matlab the accuracy and convergence of a nonlinear ODE simulation is increased by providing the analytic Jacobian of the system. See for instance ODE15S which explicitly states: "The Jacobian matrix df/dy is critical to reliability and efficiency".

I assume the same is true if the same ODE would be simulated in Simulink. So my question is, how can I provide the Jacobian of my ODE in Simulink to improve reliability and efficiency of my ODE simulation?

It would make sense that Simulink itself analytically calculates the Jacobian if all functions/blocks used are analytically known, and if not, the user would be able to prove it himself. Is there a way to do this? Is Simscape any better in this respect?

Thanks

Christophe