id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
5354	Allow to differentiate expressions w.r.t. state derivatives to compute analytic Jacobian for daeMode	Francesco Casella	Willi Braun	"Give a system F(x, x_dot, t) = 0, solvers such as IDA require to compute the Jacobians dF/dx and dF/dx_dot. 

The latter task cannot currently be carried out by the backend, because the backend has variables for the states, but not for the derivatives. The backend should then be enhanced to allow this."	enhancement	new	high		Backend