# Stability Analysis¶

The stability of a biochemical system is determined by the eigenvalues of the Jacobian matrix. Given floating species and reactions, the Jacobian matrix is defined as follows:

where is the ith differential equation and the ith floating species. From RoadRunner it is easy to obtain the Jacobian matrix using getFullJacobian(), i.e.:

Jac = rr.getFullJacobian()


which returns the Jacobian matrix in the variable Jac.

It is possible for full Jacobian to be singular. In these situations one should call the related method, getReducedJacobian().

#### Previous topic

Metabolic Control Analysis

#### Next topic

Accessing the SBML Model Variables